Question

50 pencils cost €7 . how much would 5 pencils cost
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Answer 1

5 pencils will cost €0.7

Explanation:

We can set up a proportion to solve. We will have the cost on the top and the number of pencils on the bottom. I will have 50 pencils on the left, and 5 pencils on the right.

`(7)/(50)=(x)/(5)`

Now we will cross multiply.

7 * 5 = 50 * x

35 = 50x

Divide both sides of the equation by 50.

0.7 = x

x = 0.7

5 pencils will cost €0.7