Question

tony misplaced 7 stamps from his collection. He knows that each stamp of his worth $0.15 and that the total value of them is now only $5.55. write an equation to determine the number of stamps (s) that tony originally had.

Answer 1

First we divide the total value of the stamps he has left with the cost
so its: $5.55÷$0.15 = 37
so now he has 37 stamps
just add the number of his misplaced stamps
37 + 7 = 44
Tony originally had 44 stamps