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

1. Gwen wants to buy a blouse. The price of the blouse before discount in both shops is $250. What is the savings that Gwen makes if she buys at the shop that sells the same blouse cheaper?
2. Linda bought a jacket and a sweater from Stall L and paid $252. What was the total cost of the jacket and the sweater before the discount?
3. The price of the same sweater after discount at Stall M is $91.50. Given that the price of the sweater before discount is the same in both stalls, what is the percentage discount given to the sweater at Stall L? Round off the answer to 1 decimal place.

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

Number of sets of $45 in $250
= 250 ÷ 45
= 5 r 25

Discounted price of the blouse at Stall L
= 5 x 36 + 25
= $205

Discounted price of the blouse at Stall M
= 75% x 250 
= ⁷⁵₁₀₀ x 250 
= $187.50

Amount of savings
= 205 - 187.50
= $17.50

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

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

(c)

	Stall L	Stall M
Original Price	$122	$122
Discount	- $18	- 25%
Discounted Price	$104	$91.50

Original price of the sweater at Stall M before discount
= 91.50 ÷ ⁷⁵₁₀₀
= $122

If the original price of the sweater at Stall L and Stall M is the same, the original price of the sweater at Stall L is $122.

Number of sets of $45 in $122
= 122 ÷ 45
= 2 r 32

Discounted price of the sweater at Stall L
= 2 x 36 + 32
= $104

Discount given for the sweater at Stall L
= 122 - 104
= $18

Percent discount given to the sweater at Stall L
= 100% x ¹⁸₁₂₂ 
≈ 14.8%

Answer(s): (a) $17.50; (b) $315; (c) 14.8%