Wanda's homework was to find 73% of $400

A tape diagram. 0 dollars is 0 percent. Question mark dollars is 73 percent. 400 dollars is 100 percent. (7.3) (400) = 2,920. 73 percent of 400 dollars is 2,920 dollars.

What error did Wanda make?
None. Wanda’s work is correct.
Wanda converted the percent to a decimal incorrectly. It should be 0.073.
Wanda converted the percent to a decimal incorrectly. It should be 0.73.
Wanda has the wrong label. It should be hours, not dollars.

1 answer

Wanda made an error in her calculation when converting the percent to a decimal. The correct conversion of 73% to a decimal should be 0.73, not 7.3.

Then, to find 73% of $400, the calculation should be:

\( 0.73 \times 400 = 292 \)

So the error is that Wanda converted the percent to a decimal incorrectly. The correct choice is:

Wanda converted the percent to a decimal incorrectly. It should be 0.73.