Some girls are playing card games. If each of them is given 9 cards, there will be 15 cards left. If each of them is given 7 cards, there will be 29 cards left.
- How many girls are there?
- How many cards are there?
(a)
Number of extra cards for the girls
= 29 - 15
= 14
Number of extra cards for each girl
= 9 - 7
= 2
Number of girls
= 14 ÷ 2
= 7
(b)
Number of cards
= 9 x 7 + 15
= 63 + 15
= 78
Answer(s): (a) 7; (b) 78