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Putting the Calculator to the Test

The following is a sample GED Mathematics Test problem. Use your Casio fx-260 calculator to solve the problem.

Raul must reduce his inventory of computer parts by 25%. If he has 450 parts in his store, how many parts must he sell in order to reduce the inventory by 25%? Round to the nearest whole number. Mark the box next to the correct answer.

(1) 25
(2) 112
(3) 113
(4) 250
(5) 425

Hint
Look for the
correct answer here
Explanation
Teaching Tip