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primary 5 | Maths
| Rate & Ratio
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Please help..TIA
After spending the same amount of money, at the end, A still has $42 more than B
At the end, A:B is 4:1 so A has ‘3 units’ more than B
3 units —> 42
1 unit —> 14
So B has $14 at the end and $48 at the start
So the shirt costs $48 - $14 = $34
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