It takes 1.75 hrs to fill a fuel tank. What part of the fuel tank is full after 1 hour?

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18 янв 2024

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Комментарии : 68

@tijolinixpertin 6 месяцев назад

what i love about your videos is how you highlight a lot of important concepts through the video, even if they're not really needed for solving the problem in the fastest way possible, i find that pretty helpful as a beginner that's trying to fetch as much general concepts as possible in his head, awesome work dude.

@tomtke7351 6 месяцев назад

full tank in 1.75 hrs fill rate = 1tank/1.75hr = 0.57 tank/hr // in fractions: full tank in 1&3/4 hr = 7/4hr fill rate = 1 tank/ (7/4)hr = (4/7) tank/hr in 1 hr: 1hr × 0.57 tank/hr = 0.57 tank (hr/hr cancel) // in fractions: 1hr × (4/7) tank/hr = (4/7) tank

@GeoRedtick 6 месяцев назад

The bottom part of the tank is full. Fuel flows to the bottom so the bottom part will always be the first part to fill.

@JosephWood1941-iz6mi 6 месяцев назад

If I said that to my primary school teacher in the 1950s I hate to think what the consequences would have been. Although if I had said " The bottom half" I wouldn't have been far off.

@dgriffin6074 6 месяцев назад

You don't say if the fuel tank is empty before adding fuel.

@terry_willis 6 месяцев назад

You get 3 stars and a smiley face. Take the week off.

@JosephWood1941-iz6mi 6 месяцев назад

There's 7 quarter hours in 1.75 hours. Therefore after one hour it's 4/7 th full. 57% approximately. The most 'difficult" bit was dividing 4 by 7. I love these questions, always look for short-cuts, and then try to do them mentally. At 82 I need to keep exercising the grey matter.

@1959Berre 6 месяцев назад

Indeed, it is that simple. No need for a 20 minutes explanation; it took me 10 seconds to find the answer.

@bartdb7003 6 месяцев назад

Exactly how I reasoned it, within a quarter of a minute.

@russelllomando8460 6 месяцев назад

got it. thanks for the fun. vs 1, so 4/7 is the reciprocal of 7/4 (1 3/4)

@johnplong3644 6 месяцев назад

This is close to practical math real life problems and situations

@kartiksharma3319 6 месяцев назад

Thanks a ton.. Ur video is a blessing for slow learners.... So many students in fact most students wud find this great resource ❤

@skipbrewer8101 6 месяцев назад

1/1.75 increments of .25 give a 4/7 ratio or 57% full

@jimlocke9320 6 месяцев назад

The wording is definitely confusing. To me, it implies that the fuel tank has identifiable parts. Several commentors have referred to a bottom and top half. The question really should be something like "what fraction of full". Motorcycles sometimes have a reserve tank. When the main tank ran empty, the motorcyclist can switch to the reserve tank and know approximately how far he can go before he runs out of fuel. In modern motorcycles, I understand that there is no separate tank but there are two fuel lines from the one fuel tank, one higher than the other. The motorcyclist switches to the lower line when fuel level gets below the upper line, and knows approximately how much further he can go before he will run out of fuel.

@jald910 6 месяцев назад

.57 using a calculator. Without a calculator, 1.75 is 1 3/4 or 7/4. 1 / 7/4 is 4/7.

@bridgetoriarewo2234 6 месяцев назад

To find out what part of the tank is filled after 1 hour, we need to calculate the fraction of the tank filled in 1 hour.If it takes 1.75 hours to fill the tank completely, then in 1 hour, 1/1.75 or 0.5714 (rounded to four decimal places) of the tank will be filled.Therefore, after 1 hour, approximately 0.5714 or 57.14% of the tank will be filled.

@Kleermaker1000 7 дней назад

I simply solved it as follows: 1 divided by 7/4 = 4/7.

@dudeonyoutube 6 месяцев назад

What part? The bottom part!

@Ayelmar 6 месяцев назад

After 1 hour, you'd fill 57.143% of the tank. Dividing 105 minutes by 1 tank (1 / 105) yields 0.9524% filled per minute, times 60 minutes = .05714285... 9r 57.143%.

@jimmayors2315 6 месяцев назад

Wouldn't that depend on how much fuel there is in the tank in the first place and how bit the take is overall?

@whowhatwhy91 6 месяцев назад

1/1.75=.57 using decimals I solved that in a “fraction” of a second. 😂

@theperson4yearsago565 6 месяцев назад

Fr I also thought that

@deograciousuwiragiye8429 6 месяцев назад

57%

@osmondanyanwu8306 6 месяцев назад

Full Thank= 7/7 . This Will full at 1hr 45min = 105mins At 60 mins, it Will be 1/105 × 60= 4/7

@frederickdvorak6502 6 месяцев назад

I'd say the bottom part of the tank. And, it can't be full.

@dgtv71 6 месяцев назад

The bottom part.

@tobymichaels8171 6 месяцев назад

That's the slowest gas pump I've ever heard of, and still much faster than charging my EV

@b213videoz 6 месяцев назад

FUEL not GAS

@sottx8268 6 месяцев назад

Could be an enormous storage tank, like at a refinery

@Peterseng24 6 месяцев назад

@b213videoz Depends on your definition of gas and fuel. 🇦🇺

@b213videoz 6 месяцев назад

@@Peterseng24 In Australia as far as I know gas is gas - like everywhere in the world except US where they call petrol "gas" 🤪

@mariangorski 6 месяцев назад

I had the answer after 1' . For me it was very easy

@user-ri6rn7ti5h 6 месяцев назад

1 √4 1.√2^2 1√.1^2 12 (x+1x-2)

@tomhammer1784 6 месяцев назад

The bottom!

@quabledistocficklepo3597 6 месяцев назад

60/105(60+45)=12/21=4/7.

@johnnyllooddte3415 6 месяцев назад

the bottom 4/7s

@richmondaddo8816 6 месяцев назад

Interesting Math. After 1hr the tank would be 4/7 full.

@whowhatwhy91 6 месяцев назад

.57?

@Peterseng24 6 месяцев назад

The responses in the comments shows the importance of wording the question correctly to get the answer you seek. 🇦🇺

@opium32 6 месяцев назад

The bottom part

@dyoskoporsanto9364 6 месяцев назад

3/4

@chandyaugustine4663 6 месяцев назад

Answer=1/1.75=100/175=4/7

@ironcladranchandforge7292 6 месяцев назад

Your solution is too long and tedious. I figured it out this way: 1.75 hours = 1hr 45min = 105 minutes. 60/105 = .5714 (which is exactly the same as 4/7). Also, .5714 tells you its a little over half full. By the way, 105min/2 = 52.5 minutes = half full, which is another clue to how full the tank is considering thats only 7.5 minutes from a full hour.

@gudnergiovannilondono9396 6 месяцев назад

I did with the rule of 3: 1hrx1tank/1.75hr=0.57.. on this exercise, it doesn't say to answer by fractions, which would be a different method

@hlp5040 6 месяцев назад

1/1.75 = 0.5714285714285, which rounds to 0.57. as a fraction that's 57/100. It's more precise than 4/7.

@danolson1467 6 месяцев назад

I think 4/7 is a more exact answer than a decimal, especially one that has been rounded.

@dgtv71 6 месяцев назад

21/32

@vf19blue 6 месяцев назад

Convert 1.75 hours to minutes 105 mins 105 = 100% full 1 hr = 60 mins What percentage is 60 out of 105? 60 ÷ 105 x 100 57

@terry_willis 6 месяцев назад

Answer: The bottom part.

@sheldon8115 6 месяцев назад

Guess 3/4

@MrMousley 6 месяцев назад

1.75 hours ? Is that how TIME is expressed these days ? How about 1 hour 45 minutes ... or 105 minutes. Full tank in 105 minutes .... so how full after 60 minutes ? 60 minutes is 4/7 of 105 (4 x 15 minutes) / (7 x 15 minutes) So the tank is 4/7 full.

@johnplong3644 6 месяцев назад

4/7

@theperson4yearsago565 6 месяцев назад

No lul

@rodneythompson3026 6 месяцев назад

4/7ths

@dwaipayandattaroy9801 6 месяцев назад

63 part filled

@jennymurray2873 6 месяцев назад

100/175 = .57

@samswift4921 6 месяцев назад

4/7 or 57%

@samjones3106 6 месяцев назад

Must be a big truck.

@williamthurl2607 6 месяцев назад

Four sevenths of it ....

@51incher 6 месяцев назад

57 per cent

@johnwood2223 6 месяцев назад

4/7th

@webadage 6 месяцев назад

It depends on the geometry (shape) of the tank.

@terry_willis 6 месяцев назад

Why? Regardless of the shape, the tank has a certain volume to be filled. If it was a regular cylinder shape or shaped like a corkscrew the answer would be the same.