Ben had 720 buttons. He gave
58 of it to Tom and
45 of the remainder to Diana. How many buttons had he left?
Fraction of the buttons left after giving to Tom
= 1 -
58 =
38 Fraction of the remaining buttons left after giving to Diana
= 1 -
45 =
15
Fraction of the buttons left after giving to Tom and Diana
= 38 x 15
= 340
Total number of buttons = 40 u
40 u = 720
1 u = 720 ÷ 40 = 18
Number of buttons left
= 3 u
= 3 x 18
= 54
Answer(s): 54