Onions cost $3 per kilogram.
Peter buys 3.35 kilograms of onions.
How much does Peter pay for the onions? (2 marks)
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`text(Strategy 1)`
`text(C)text(ost of 3 kg) = 3 xx $3 = $9`
`text(C)text(ost of 0.1 kg) = 3/10 = text(30 cents)`
| `=>\ text(C)text(ost of 0.35 kg)` | `= 3.5 × 30\ text(cents)` |
| `= 105\ text(cents)` | |
| `= $1.05` |
| `:.\ text(C)text(ost of 3.35 kg)` | `= 9 + 1.05` |
| `= $10.05` |
`text(Strategy 2)`
`:.\ 3.35 xx $3 = $10.05`