David earns $60 per day. He receives and extra $75 for every 4 days of work.
- How much will he earn altogether after working for 4 days?
- How much will he earn altogether after working for 43 days?
(a)
Amount that David earns after working for 4 days
= 60 x 4 + 75
= 240 + 75
= $315
(b)
Number of sets of 4 days in 43 days
= 43 ÷ 4
= 10 r 3
Amount that David earns for working 10 sets of 4 days
= 10 x 315
= $3150
Amount that David earns after working 3 days
= 3 x 60
= $180
Total amount that David earns after working for 43 days
= 3150 + 180
= $3330
Answer(s): (a) $315; (b) $3330