Question

Find the percentage 1. 85% of 80 2. 40% of 20 3. 30% of 210

Answer 1

To solve for a percentage of a number, convert the percentage to a decimal and multiply by the number. The calculations show 85% of 80 is 68, 40% of 20 is 8, and 30% of 210 is 63.

Step-by-step explanation:

Finding the percentage of a number involves multiplying the number by the percentage, expressed as a decimal. Below are the step-by-step solutions for each of the problems given:

1. To find 85% of 80, multiply 80 by 0.85 (since 85% as a decimal is 0.85):
   80 x 0.85 = 68. So, 85% of 80 is 68.
2. To calculate 40% of 20, convert 40% to 0.40 and multiply by 20:
   20 x 0.40 = 8. Therefore, 40% of 20 is 8.
3. For 30% of 210, change 30% to the decimal 0.30 and multiply by 210:
   210 x 0.30 = 63. Thus, 30% of 210 is 63.

These calculations help us understand how percentages relate to actual quantities in various contexts, whether it's calculating tips, understanding relative frequencies, or determining percent yield.