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