Contemporary Mathematics for Business and Consumers 7th Edition by Robert Brechner ,George Bergeman

تمرين 81

Solve the following increase or decrease problems for the unknown. Round decimals to hundredths and percents to the nearest tenth.
Economic reports indicate that during a recent manufacturing slowdown, unemployment in River Valley increased from 7.4% to 9.8%, an increase of 2.4 percentage points.
a. What percent increase does this represent? Round to the nearest tenth of a percent.
b. As manufacturing picked up, unemployment dropped from 9.8% to 8.1%, a decrease of 1.7 percentage points. What percent decrease does this represent? Round to the nearest hundredth of a percent.