Question

challenge #2
40 went into this machine and 48 came out.
what percent increase does this machine use?
(there is an image on the left showing a machine with 40 going in and a sign increase by?? % above the machine output, and an input box with a try it button on the right.)

Explanation:

Step1: Find the increase amount

The initial value is 40, and the final value is 48. The increase amount is \( 48 - 40 = 8 \).

Step2: Calculate the percent increase

The formula for percent increase is \( \frac{\text{Increase}}{\text{Original}} \times 100\% \). Substituting the values, we get \( \frac{8}{40} \times 100\% = 0.2 \times 100\% = 20\% \).

Answer:

20%