Tiffany has some balls in a bag. The number of balls is less than 50. If she gives 7 balls to each pupil, she will have none left. If she gives 10 balls to each pupil, she will need 18 more balls.
- How many pupils does Tiffany have?
- How many balls are there in the bag?
(a)
Total extra number of balls that Tiffany will need = 18
Number of extra balls that Tiffany will give to each pupil
= 10 - 7
= 3
Number of pupils that Tiffany has
= 18 ÷ 3
= 6
(b)
Number of balls that Tiffany has
= 7 x 6
= 42
Answer(s): (a) 6; (b) 42