A shop reduces its weekly paper use from 250 sheets to 190 sheets. What is the percent decrease? Enter the number of percent.
Richtige Antwort
24
Erklärung
The reduction is 250 - 190 = 60 sheets, and 60 / 250 x 100 = 24%. Dividing by 190 gives about 31.58%, which incorrectly uses the final amount as the base.