Question 324498
time = distance / rate


working in hrs ___ 10/3 = [990 / (600 + w)] + [990 / (600 - w)]


multiplying by 3(360000-w^2) the LCD ___ 3600000 - 10w^2 = 3[990(600-w)] + 3[990(600+w)]


0 = w^2 - 3600


w = ±60