Last question can be answered, Solution: Let's assume the principal amount as P and the rate of interest as R. Given: Principal amount = P Rate of interest = R Time = 7 years Simple interest earned = Rs. 1750 Using the formula for simple interest: Simple Interest = (Principal * Rate * Time)/100 1. Calculation of Principal amount: 1750 = (P * R * 7)/100 1750 * 100 = 7PR 175000 = 7PR PR = 25000 2. Calculation of new rate of interest: Let's assume the new rate of interest as R1. According to the question, the new rate of interest is 2% more than the original rate of interest. R1 = R + (2/100) * R R1 = R + 0.02R R1 = 1.02R 3. Calculation of new interest earned: New interest = (Principal * New rate * Time)/100 New interest = (P * R1 * 7)/100 New interest = (P * 1.02R * 7)/100 New interest = (1.02PR * 7)/100 New interest = (1.02 * 25000 * 7)/100 New interest = (1.02 * 250 * 7) New interest = 1785 4. Calculation of the difference in interest: Difference in interest = New interest - Old interest Difference in interest = 1785 - 1750 Difference in interest = 35 Therefore, if the interest per annum had been 2% more, the amount would have earned an additional interest of Rs. 35. So, the ans is 35 rs
I am going to understand but when u covered the board I can’t understand the value how it was came.. ma’am please explain without covering the board it will be easy to understand…
In last question you don't need to know principal, just put R+2 in the new formula and subsitute the value of PN/100 as 250 (you'll get it after calculation).
i dnt no why so urgent u do mam while explaining buz there will be so may level students learners are there. so request you to go with slow or dnt do hurry .
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