Some girls are playing card games. If each of them is given 9 cards, there will be 6 cards left. If each of them is given 3 cards, there will be 30 cards left.
- How many girls are there?
- How many cards are there?
(a)
Number of extra cards for the girls
= 30 - 6
= 24
Number of extra cards for each girl
= 9 - 3
= 6
Number of girls
= 24 ÷ 6
= 4
(b)
Number of cards
= 9 x 4 + 6
= 36 + 6
= 42
Answer(s): (a) 4; (b) 42