Let x = distance to town, t1 = time to town and t2 = return time.
x = v1t1 = v2t2 so
36t1 = 48t2 Which seems like you can't solve it. But t2 = 3.5 - t1. So
36t1 = 48(3.5-t1). Solve for t1 and put back into x = 36(t1)
Farmer Brown drives to town at 36 mph and returns at 48 mph. If his total driving time is 3 and 1/2 hours, how far away is the town?
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