Mathematics for IGCSE & O level - Ratio And Proportion (Section 3 - No. 1)
In 200 grams of a spice mix, 45 cents worth of the spice is used. Find the cost, in dollars, of 1 kilogram of this spice mix.
$0.23
$1.13
$2.25
$2.30
Explanation
If 200g cost $0.45, 1000g (1kg) would cost 5 * 0.45 = $2.25
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