At a stationery shop, markers are sold at $6 for 1 marker. For every 5 markers a customer pays, an extra marker will be given free.
- How much will Mrs Goh pay for 11 markers?
- What is the most number of markers Mr Yang can get for $125?
(a)
Number of markers in one set
= 5 + 1
= 6
Cost of a set of 6 markers
= 5 x 6
= $30
Number of sets
= 11 ÷ 6
= 1 r 5
Amount that Mrs Goh paid
= 1 x 30 + 5 x 6
= 30 + 30
= $60
(b)
Maximum number of sets
= 125 ÷ 30
= 4 r 11
Number of markers that can be bought with remaining money
= 11 ÷ 6
= 4
Maximum number of markers
= 6 x 4 + 4
= 28
Answer(s): (a) $60; (b) 28