At a shop, a bag of muffins is sold at $11. For every $20 spent, a customer is given 2 free sweets. Mrs Lui bought 9 bags of muffins.
- How much did Mrs Lui pay?
- How many sweets did she get?
(a)
Amount paid for 9 bags of muffins
= 9 x 11
= $99
(b)
Number of sets
= 99 ÷ 20
= 4 r 19
Maximum number of sets = 4
Number of sweets that Mrs Lui got
= 4 x 2
= 8
Answer(s): (a) $99; (b) 8