Question

Noah says that to find 20% of a number he divides the number by 5. For example, 20% of 60 is 12, because 60 ➗ 5 = 12. Does Noah’s method always work? Explain why or why not.

Answer 1

No it doesn't

Explanation:

His method never works because multiplying by does not give the same result as dividing by 5. AI Recommended Answer: To find 20% of a number, divide the number by 5. For example, 20% of 60 is 12.

Answer 2

No, Noah's method does not always work.

Explanation:

Let's say we're trying to find 40% of 80 instead of 20% of 60.

If we divide 80 by 5, like Noah says, we get 16, which is not 40% of 80.

The proper solution would be to multiply the number by the percentage converted to a decimal.

In this case, it would be 80 × 0.4, which is 32.

When you try to solve 20% of 60, you can say 60 × 0.2, which also gets 16.