A shopping centre gave a discount of $3 for every $30 spent. Mary bought a sweater and paid $130 after the discount.
- What was the price of the sweater before the discount?
- What was the amount that Mary saved?
(a)
Actual amount paid for every $30 spent
= 30 - 3
= $27
Number of sets of $27 spent
= 130 ÷ 27
= 4 r 22
Price of the sweater before the discount
= 4 x 30 + 22
= 120 + 22
= $142
(b)
Amount that Mary saved
= 4 x 3
= $12
Answer(s): (a) $142; (b) $12