How would I find the answer to the attached question?
A freight train is $27$ minutes late when it makes its usual trip between town A Trinhland and Town B Jafferton at an average speed of $56$ km/hr. For another trip between Town A and B, the freight train is $42$ minutes late when its average speed is $54$ km/hr. What is the distance between Town A and Town B?
I believe this is an approach:
$d=v_1*t=v_2*(t+15/60)$
$v_1*t-v_2*t=v_2*0.25$
$t(v_1-v_2)=v_2*0.25$
$t = v_2*0.25/(v_1-v_2)$
$d=v_1*v_2*0.25/(v_1-v_2)$
I hope this helps.