Skip to main content
OlympiadHQ

Browse · MATH

Print

jmc

algebra senior

Problem

The doctor has told Cal O'Ree that during his ten weeks of working out at the gym, he can expect each week's weight loss to be of his weight at the end of the previous week. His weight at the beginning of the workouts is pounds. How many pounds does he expect to weigh at the end of the ten weeks? Express your answer to the nearest whole number.
Solution
Each week, his weight becomes times that of the previous week. Therefore, after 10 weeks, his weight is , so the answer is .
Final answer
221