Ran into this one in the lab and I'm trying to make sense of it (back of the book says the answer is 176 mph): "In 1991 Rich Mears won the (500 mi) Indianapolis 500 race. His speed (rate) was 100 mph (the the nearest mph) faster than that of the 1911 winner, Ray Harroun. Mears completed the race in 3.74 hours less time than Harroun. Find Mears's rate to the nearest whole number." Here's how I set it up initially: D / r = t 500 / (x + 100) = t Harroun's time can be expressed as 500 / x = t Mears's time can then be expressed as 500 / x - 3.74 hours So here's the final setup I had: 500 / (x + 100) = (500 / x) - 3.74 Am I going the right route?