An item was purchased for a price of $660, including 10% GST.
What is the amount of GST included in the price?
- $6.00
- $6.60
- $60.00
- $66.00
`text{Let}\ C =\ text{Original cost}`
| `C + 0.1 × C` | `= 660` |
| `1.1C` | `= 660` |
| `C` | `= 660 / 1.1` |
| `= $600` |
`:.\ \text{GST} = 660-600 = $60`
`=> C`
♦ Mean mark 4