Julie has some marbles in a bag. The number of marbles is less than 40. If she gives 7 marbles to each pupil, she will have none left. If she gives 10 marbles to each pupil, she will need 15 more marbles.
- How many pupils does Julie have?
- How many marbles are there in the bag?
(a)
Total extra number of marbles that Julie will need = 15
Number of extra marbles that Julie will give to each pupil
= 10 - 7
= 3
Number of pupils that Julie has
= 15 ÷ 3
= 5
(b)
Number of marbles that Julie has
= 7 x 5
= 35
Answer(s): (a) 5; (b) 35