Question

Derek's job earns him $25 each week and his weekly expenses amount to $10. Every five weeks he donates 25% of the balance amount to a charity organization. Calculate the amount he donates.

A. 12.50
B. 18.75
C. 16.25

Answer 1

At the end of 1 week he gets to keep 15 dollars because 25-10=15

Answer 2

After 5 weeks he has 15x5=75 dollars

Answer 3

25% is nothing but .25
So 25% of 75 is .25x75

Answer 4

and .25x75=18.75

Answer 5

So at the end of 5 weeks he donates $18.75 which is answer choice B.

Answer 6

@elasher

Answer 7

Thank you so much!