At a store, notebooks are sold at $6 for 1 notebook. For every 5 notebooks a customer pays, an extra notebook will be given free.
- How much will Mrs Chiam pay for 10 notebooks?
- What is the most number of notebooks Mr Long can get for $136?
(a)
Number of notebooks in one set
= 5 + 1
= 6
Cost of a set of 6 notebooks
= 5 x 6
= $30
Number of sets
= 10 ÷ 6
= 1 r 4
Amount that Mrs Chiam paid
= 1 x 30 + 4 x 6
= 30 + 24
= $54
(b)
Maximum number of sets
= 136 ÷ 30
= 4 r 10
Number of notebooks that can be bought with remaining money
= 10 ÷ 6
= 4
Maximum number of notebooks
= 6 x 4 + 4
= 28
Answer(s): (a) $54; (b) 28