Ahmad had 520 marbles. He gave
58 of it to Paul and
45 of the remainder to Betty. How many marbles had he left?
Fraction of the marbles left after giving to Paul
= 1 -
58 =
38 Fraction of the remaining marbles left after giving to Betty
= 1 -
45 =
15
Fraction of the marbles left after giving to Paul and Betty
= 38 x 15
= 340
Total number of marbles = 40 u
40 u = 520
1 u = 520 ÷ 40 = 13
Number of marbles left
= 3 u
= 3 x 13
= 39
Answer(s): 39