Question

3. A boy saves Rs 6.75 daily, Find the least
number of days in which he will be able to
save exact number of rupees.​

Answer 1

4 Days..

Each day a sum of 6.75 is saved, so,

Day 1 -- 6.75 X 2 = 13.5 [Here ".5" is there so it's not exact]

Day 2 -- 6.75 X 3 = 20.25

.

.

.

Day 4 -- 6.75 X 4 = 27 [Here he has exact number of rupees without any decimal left.]

Hence; The least is 4 number of day the has to wait in-order to get exact number of rupees.