Usha has some balls in a bag. The number of balls is less than 30. If she gives 5 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 Usha have?
- How many balls are there in the bag?
(a)
Total extra number of balls that Usha will need = 20
Number of extra balls that Usha will give to each pupil
= 10 - 5
= 5
Number of pupils that Usha has
= 20 ÷ 5
= 4
(b)
Number of balls that Usha has
= 5 x 4
= 20
Answer(s): (a) 4; (b) 20