Some children are playing card games. If each of them is given 9 cards, there will be 10 cards left. If each of them is given 5 cards, there will be 30 cards left.
- How many children are there?
- How many cards are there?
(a)
Number of extra cards for the children
= 30 - 10
= 20
Number of extra cards for each child
= 9 - 5
= 4
Number of children
= 20 ÷ 4
= 5
(b)
Number of cards
= 9 x 5 + 10
= 45 + 10
= 55
Answer(s): (a) 5; (b) 55