Question

Explain how to calculate this mentally

1. 15is the percentage of
30

2. 3 is what percentage of 12

3. Six is what percentage of 10

Answer 1

1. 50℅

2. 25℅

3. 60℅

hope it helps.

Answer 2

Below.

Explanation:

1. Divide 15 by 30 which is 1/2.

Then multiply 1/2 by 100 = 50%.

2. 3/12 = 1/4

1/4 * 100 = 25%

3. 6/10 = 0.6

0.6 * 100 = 60%.