9. Theresa 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?
6 mph
12 mph
15 mph
18 mph

Question

9. Theresa 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?
6 mph
12 mph
15 mph
18 mph

anonymous · Answer

we did this 
s = (2/3) * v
s = (1/3) * (v+12)

2v = v+12
v = 12

anonymous · Answer

I remembered right after I posted.. Sorry forgot to close