Sabrina has some beads in a bag. The number of beads is less than 30. If she gives 7 beads to each pupil, she will have none left. If she gives 10 beads to each pupil, she will need 12 more beads.
- How many pupils does Sabrina have?
- How many beads are there in the bag?
(a)
Total extra number of beads that Sabrina will need = 12
Number of extra beads that Sabrina will give to each pupil
= 10 - 7
= 3
Number of pupils that Sabrina has
= 12 ÷ 3
= 4
(b)
Number of beads that Sabrina has
= 7 x 4
= 28
Answer(s): (a) 4; (b) 28