MathDB
AMC 8 2004 Problem 7

Source:

November 28, 2010

Problem Statement

An athlete's target heart rate, in beats per minute, is 80%80\% of the theoretical maximum heart rate. The maximum heart rate is found by subtracting the athlete's age, in years, from 220220. To the nearest whole number, what is the target heart rate of an athlete who is 2626 years old?
<spanclass=latexbold>(A)</span> 134<spanclass=latexbold>(B)</span> 155<spanclass=latexbold>(C)</span> 176<spanclass=latexbold>(D)</span> 194<spanclass=latexbold>(E)</span> 243<span class='latex-bold'>(A)</span>\ 134\qquad <span class='latex-bold'>(B)</span>\ 155 \qquad <span class='latex-bold'>(C)</span>\ 176\qquad <span class='latex-bold'>(D)</span>\ 194\qquad <span class='latex-bold'>(E)</span>\ 243