Question

A person covered some distance in 24 hours. He covered half the distance by rail @ 75 km per hour and the rest by car @ 45 km/hr. The total distance covered by him was

Answer 1

1350km is covered by the person

Answer 2

#) Distance- d

equals rate- r

time- t

:- d=rt =>t=d/r

time spent by rail-(d/2)/75

time spent by car-(d/2)/45

:- (d/2)/75+(d/2)/45=24

=> d/150+d/90=24

=>3d+5d=24×450(450 lcm)

=>d=10800/8

=>d=1350 ans✓