Some pupils are playing card games. If each of them is given 9 cards, there will be 12 cards left. If each of them is given 7 cards, there will be 24 cards left.
- How many pupils are there?
- How many cards are there?
(a)
Number of extra cards for the pupils
= 24 - 12
= 12
Number of extra cards for each pupil
= 9 - 7
= 2
Number of pupils
= 12 ÷ 2
= 6
(b)
Number of cards
= 9 x 6 + 12
= 54 + 12
= 66
Answer(s): (a) 6; (b) 66