Question Video: Using the Ratio between Three Quantities and the Value of One of Them to Find the Values of the Other Two Mathematics

The ratio of the prices of a television, an oven and a fridge is 2 : 3 : 7 respectively. Given that the television costs 7‎540 LE, calculate the prices of the oven and the fridge.

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Video Transcript

The ratio of the prices of a television, an oven, and a fridge is two, three, seven, respectively. Given that the television costs 7‎,540 Egyptian pounds, calculate the prices of the oven and the fridge.

We are told that the ratio is two, three, seven where this is the cost of the television, oven, and fridge, respectively. We are also told that the cost of the television is 7,540 Egyptian pounds. This corresponds to two parts of our ratio. If two parts is equal to 7,540 Egyptian pounds, we can calculate the value of one part by dividing by two. 7,540 divided by two is 3,770. Therefore, one part of our ratio is 3,770 Egyptian pounds.

We can therefore calculate the prices of the oven and the fridge by multiplying three and seven by 3,770. Three multiplied by 3,770 is 11,310. Seven multiplied by 3,770 is 26,390. This ratio is equivalent to two, three, seven. We can therefore conclude that the price of the oven is 11,310 Egyptian pounds and the price of the fridge is 26,390 Egyptian pounds.

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