A father walks 36 miles in 12 hours, while his son covers the same distance on a bicycle at twice the father's rate of speed. At this rate; how many miles would the bicycle rider travel in 9 hours?
Make a Selection:
A. 52.5 miles
B. 49.5 miles
C. 54 miles
D. 48 miles

C. 54 miles

Step-by-step explanation:

The father walks 36 miles in 12 hours meaning that he walks 3 miles in one hour or 3 mph.

If the son goes twice as fast as the father then he is going at a rate of 6 mph.

So in 9 hours the son will have gone 9 hours x 6 mph = 54 miles

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

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step-by-step explanation: