Question

When exercising a person's pulse rate should not exceed a certain limit which depends on his or her age.This maximum rate is represented by the expression 0.8(220-a)where a is age in years.Find the age of a person whose maximum pulse is 152.

Answer 1

The person is 30 years old!

A = .8 (220-a)

152 = .8 (220-a)

152 = 176 - .8a

.8a = 24

a = 30

Explanation:

Answer 2

The age of a person whose maximum pulse is 152 is 30 years old.