Some boys are playing card games. If each of them is given 7 cards, there will be 8 cards left. If each of them is given 5 cards, there will be 28 cards left.
- How many boys are there?
- How many cards are there?
(a)
Number of extra cards for the boys
= 28 - 8
= 20
Number of extra cards for each boy
= 7 - 5
= 2
Number of boys
= 20 ÷ 2
= 10
(b)
Number of cards
= 7 x 10 + 8
= 70 + 8
= 78
Answer(s): (a) 10; (b) 78