two cars are driving toward each other . the first car is traveling at a speed of 90 km / h , which is 50 % faster than the second car ' s speed . if the distance between the cars is 975 km , how many hours will it take until the two cars meet ?
"the speed of the first car is 90 km / h . the speed of the second car is 90 / 1.5 = 60 km / h . the two cars complete a total of 150 km each hour . the time it takes the cars to meet is 975 / 150 = 6.5 hours . the answer is b ."
divide(add(multiply(90, const_4), multiply(divide(multiply(const_4, 90), add(const_1, const_4)), const_4)), add(90, divide(multiply(const_4, 90), add(const_1, const_4))))