PSLE
Mrs Sean bought a blouse and a ring at a discount. She spent a total of $86.40 on these two items. She spent $43.20 more on the ring than on the blouse.

1. How much did she spend on the ring?
2. The total discount given for the two items was $9.60. She was given a 10% discount for the blouse. What was the percentage discount given for the ring?

(a)
Amount spent on the blouse = 1 u
Amount spent on the ring = 1 u + 43.20

Total amount spent on the blouse and the ring
= 1 u + 1 u + 43.20
= 2 u + 43.20

2 u + 43.20 = 86.40
2 u = 86.40 - 43.20
2 u = 43.20

1 u = 43.20 ÷ 2 = 21.60

Amount that Mrs Sean spent on the ring
= 21.60 + 43.20
= $64.80

(b)

	Blouse	Ring	Total
Original price	100%	$72
Discount	10%  $2.40	$7.20	$9.60
Discounted price	90% $21.60	$64.80	$86.40

Discounted price of the blouse
= 100% - 10%
= 90%

90% of the price of the blouse = 21.60
1% of the price of the blouse = 21.60 ÷ 90
10% of the price of the blouse = 21.60 ÷ 90 x 10 = 2.40

Discount given for the ring
= 9.60 - 2.40
= $7.20

Original price of the ring
= 64.80 + 7.20
= $72

Percentage discount of the ring
= ^7.20₇₂ x 100%
= 10%

Answer(s): (a) $64.80; (b) 10%