Mary has some beads in a bag. The number of beads is less than 30. If she gives 5 beads to each pupil, she will have none left. If she gives 9 beads to each pupil, she will need 16 more beads.
- How many pupils does Mary have?
- How many beads are there in the bag?
(a)
Total extra number of beads that Mary will need = 16
Number of extra beads that Mary will give to each pupil
= 9 - 5
= 4
Number of pupils that Mary has
= 16 ÷ 4
= 4
(b)
Number of beads that Mary has
= 5 x 4
= 20
Answer(s): (a) 4; (b) 20