Victoria has some marbles in a bag. The number of marbles is less than 30. If she gives 5 marbles to each pupil, she will have none left. If she gives 9 marbles to each pupil, she will need 20 more marbles.
- How many pupils does Victoria have?
- How many marbles are there in the bag?
(a)
Total extra number of marbles that Victoria will need = 20
Number of extra marbles that Victoria will give to each pupil
= 9 - 5
= 4
Number of pupils that Victoria has
= 20 ÷ 4
= 5
(b)
Number of marbles that Victoria has
= 5 x 5
= 25
Answer(s): (a) 5; (b) 25