Question
if you walk for m minutes, the number c of calories used is proportional to the time you walk. if 30 caloris are used when you walk for 12 minutes, write an equation of variation and find the number of calories used when you walk for an hour
Answers
Reiny
C ∝ t
or
C = kt, where k is a constant
for C=30 , t = 12
30 = k(12)
k = 30/12 = 5/2
C = (5/2)t
so for t=60
C = (5/2)(60) = 150
or
C = kt, where k is a constant
for C=30 , t = 12
30 = k(12)
k = 30/12 = 5/2
C = (5/2)t
so for t=60
C = (5/2)(60) = 150