Question

3 A recipe for two people requires 1kg of rice to 150 g of meat.

Answer 1

By seeing the proportion, we get that approximately, 870 g of rice is required and 130 g of meat is required for the recipe.

We are given that a recipe for two people requires 1kg of rice to 150 g of meat.

That is the proportion of rice to meat is:

1 kg : 150 g

1000 g : 150 g

100 : 15

20 : 3

Now, we are also given that 1 kg that is 1000 g of dish is to be prepared.

Let the portion of rice in it be x.

Portion of meat = 1000 - x

ATQ:

20 : 3 :: x : 1000 - x

20 / 3 = x / (1000 - x)

20,000 - 20 x = 3x

23 x = 20,000

x = 20000 / 23 = 870 ( approx.)

1000 - x = 1000 - 870 = 130.

Therefore, by seeing the proportion, we get that approximately, 870 g of rice is required and 130 g of meat is required for the recipe.

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