Gillian has some balls in a bag. The number of balls is less than 40. If she gives 6 balls to each pupil, she will have none left. If she gives 10 balls to each pupil, she will need 20 more balls.
- How many pupils does Gillian have?
- How many balls are there in the bag?
(a)
Total extra number of balls that Gillian will need = 20
Number of extra balls that Gillian will give to each pupil
= 10 - 6
= 4
Number of pupils that Gillian has
= 20 ÷ 4
= 5
(b)
Number of balls that Gillian has
= 6 x 5
= 30
Answer(s): (a) 5; (b) 30