The price of a printer with 5% GST is $9030.
- How much does Adam have to pay if the GST is increased to 15%?
- How much more must Adam pay because of the GST increase?
(a)
Price of the printer with 5% GST
= 100% + 5%
= 105%
105% → $9030
1% → 9030 ÷ 105 = $86
100% → 100 x 86 = $8600
Price of the printer with 15% GST
= 100% + 15%
= 115%
Amount that Adam has to pay
= 115% x 8600
=
115100 x 8600
= $9890
(b)
Amount more that Adam must pay because of the GST increase
= 9890 - 9030
= $860
Answer(s): (a) $9890; (b) $860