Question 1070742
RT=D, constant travel rate rule


{{{(400/6+150/40+10/25)hours}}}


{{{400/6+15/4+2/5}}}, LCD 60


{{{4000/60+225/60+24/60}}}


{{{4249/60}}}, the numerator is minutes


{{{70.8*hours}}}
70 hours 49 minutes