Question

Training Heart Rate. A person's training heart rate, in beats per minute, is the person's resting heart rate plus 60% of the difference between maximum heart rate and his resting heart rate. If resting heart rate is R and maximum heart rate is M, then the formula that gives training heart rate is

Answer 1

We have the following formula:

$T=R+\frac{3}{5}(M-R)$

Where: T = training heart rate

R = resting heart rate

M = maximum heart rate = 189

Then solve for T, given R:

R = 60

$T=60+\frac{3}{5}(189-60)=60+\frac{3}{5}(129)=60+77.4=137.4$

R = 62

$T=62+\frac{3}{5}(189-62)=62+\frac{3}{5}(127)=62+76.2=138.2$

R = 64

$T=64+\frac{3}{5}(189-64)=64+\frac{3}{5}(125)=64+75=139$

R = 68

$T=68+\frac{3}{5}(189-68)=68+\frac{3}{5}(121)=68+72.6=140.6$

R = 70

$T=70+\frac{3}{5}(189-70)=70+\frac{3}{5}(119)=70+71.4=141.4$

R = 72

$T=72+\frac{3}{5}(189-72)=72+\frac{3}{5}(117)=72+70.2=142.2$

Answer:

Training heart rate (beats per minute)

137.4

138.2

139

140.6

141.4

142.2