Some girls are playing card games. If each of them is given 7 cards, there will be 10 cards left. If each of them is given 5 cards, there will be 28 cards left.
- How many girls are there?
- How many cards are there?
(a)
Number of extra cards for the girls
= 28 - 10
= 18
Number of extra cards for each girl
= 7 - 5
= 2
Number of girls
= 18 ÷ 2
= 9
(b)
Number of cards
= 7 x 9 + 10
= 63 + 10
= 73
Answer(s): (a) 9; (b) 73