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Ashley can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per...Asked by Bob
Samantha can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?
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Answered by
helper
D = RT (Distance = Rate x Time)
R = rate of bike
0.67 = time of bike (2/3 = 0.67)
0.67R = distance of bike
R + 12 = rate of car
0.33 = time of ca (1/3 = 0.33)
.33(R + 12) = distance of car
Since distance is equal
0.67R = 0.33(R + 12)
Solve for R, rate of bike
R = rate of bike
0.67 = time of bike (2/3 = 0.67)
0.67R = distance of bike
R + 12 = rate of car
0.33 = time of ca (1/3 = 0.33)
.33(R + 12) = distance of car
Since distance is equal
0.67R = 0.33(R + 12)
Solve for R, rate of bike
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