Tina has some beads in a bag. The number of beads is less than 20. If she gives 3 beads to each pupil, she will have none left. If she gives 7 beads to each pupil, she will need 20 more beads.
- How many pupils does Tina have?
- How many beads are there in the bag?
(a)
Total extra number of beads that Tina will need = 20
Number of extra beads that Tina will give to each pupil
= 7 - 3
= 4
Number of pupils that Tina has
= 20 ÷ 4
= 5
(b)
Number of beads that Tina has
= 3 x 5
= 15
Answer(s): (a) 5; (b) 15