(a) 70% = S$126
100% = S$126 / 0.7 = S$180
The price of the rice cooker before discount is S$180

(b) Discount of the rice cooker is S$180 x 30% = S$54
Discount of the toaster is S$64 – S$54 = S$10

Price of the toaster before discount is S$40 + S$10 = S$50
Percentage discount given for the toaster is S$10 / S$50 = 0.2 = 20%

.

(a)

Let the original price be $x.

70/100 * x=126

x=126*100/70=180

The original price is $180.

(b)

Discount for rice cooker = 180-126=54

Discount for toaster=64-54=10

Percentage discount=10/(40+10)*100%=20%