During a sale, the discount given by Stall K and Stall L are as shown:
Stall K - Discount of $9 for every $45 spent
Stall L - 25% off Storewide

1. Jean wants to buy a vest. The price of the vest before discount in both shops is $110. What is the savings that Jean makes if she buys at the shop that sells the same vest cheaper?
2. Jane bought a blouse and a jacket from Stall K and paid $252. What was the total cost of the blouse and the jacket before the discount?
3. The price of the same jacket after discount at Stall L is $79.50. Given that the price of the jacket before discount is the same in both stalls, what is the percentage discount given to the jacket at Stall K? Round off the answer to 1 decimal place.

(a)
Amount to pay at Stall K for every $45 spent
= 45 - 9
= $36

Number of sets of $45 in $110
= 110 ÷ 45
= 2 r 20

Discounted price of the vest at Stall K
= 2 x 36 + 20
= $92

Discounted price of the vest at Stall L
= 75% x 110 
= ⁷⁵₁₀₀ x 110 
= $82.50

Amount of savings
= 92 - 82.50
= $9.50

(b)
Number of sets of $36 in $252
= 252 ÷ 36
= 7

Total cost of the blouse and the jacket
= 7 x 45
= $315

(c)

	Stall K	Stall L
Original Price	$106	$106
Discount	- $18	- 25%
Discounted Price	$88	$79.50

Original price of the jacket at Stall L before discount
= 79.50 ÷ ⁷⁵₁₀₀
= $106

If the original price of the jacket at Stall K and Stall L is the same, the original price of the jacket at Stall K is $106.

Number of sets of $45 in $106
= 106 ÷ 45
= 2 r 16

Discounted price of the jacket at Stall K
= 2 x 36 + 16
= $88

Discount given for the jacket at Stall K
= 106 - 88
= $18

Percent discount given to the jacket at Stall K
= 100% x ¹⁸₁₀₆ 
≈ 17%

Answer(s): (a) $9.50; (b) $315; (c) 17%