Roshel 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 8 marbles to each pupil, she will need 12 more marbles.
- How many pupils does Roshel have?
- How many marbles are there in the bag?
(a)
Total extra number of marbles that Roshel will need = 12
Number of extra marbles that Roshel will give to each pupil
= 8 - 5
= 3
Number of pupils that Roshel has
= 12 ÷ 3
= 4
(b)
Number of marbles that Roshel has
= 5 x 4
= 20
Answer(s): (a) 4; (b) 20