The price of a laptop with 5% GST is $9660.
- How much does Adam have to pay if the GST is increased to 10%?
- How much more must Adam pay because of the GST increase?
(a)
Price of the laptop with 5% GST
= 100% + 5%
= 105%
105% → $9660
1% → 9660 ÷ 105 = $92
100% → 100 x 92 = $9200
Price of the laptop with 10% GST
= 100% + 10%
= 110%
Amount that Adam has to pay
= 110% x 9200
=
110100 x 9200
= $10120
(b)
Amount more that Adam must pay because of the GST increase
= 10120 - 9660
= $460
Answer(s): (a) $10120; (b) $460