1.) Jhe, Anna and Gem can decorate a birthday poster in 1.9 hours. If Jhe does the job alone, she can complete it in 5 hours. Anna can complete it in 7 hours. How long will it take Gem alone to complete the decoration?
a. 5.45 hours
b. 8.80 hours
c. 6.25 hours
d. 10.45 hours
2.) Marian can finish weaving a mat in three days. Elena can weave the same mat in 5 days and Cristel in 4 days. If the three of them work together, how long would it take them to weave the mat?
a. 2.65 days
b. 1.28 days
c. 1.25 days
d. 2.50 days
28 авг 2024
