Question 919686
t = D/r, times the same before impact
x the Distance traveled by faster car
{{{ x/(130mph )= (400-x)/(120mph)}}} | Cross Multiplying to solve
120x = 130•400 - 130x
250x = 130•400
x = 130•400/250 = 208mi
t = {{{208mi/(130mph)}}} = 1.6 hr