Owen had 240 buttons. He gave
58 of it to Ethan and
45 of the remainder to Cathy. How many buttons had he left?
Fraction of the buttons left after giving to Ethan
= 1 -
58 =
38 Fraction of the remaining buttons left after giving to Cathy
= 1 -
45 =
15
Fraction of the buttons left after giving to Ethan and Cathy
= 38 x 15
= 340
Total number of buttons = 40 u
40 u = 240
1 u = 240 ÷ 40 = 6
Number of buttons left
= 3 u
= 3 x 6
= 18
Answer(s): 18