A girl goes to her office for work which is 50 miles . She goes to her office few distance by bicycle and remaining by train . The speed of bicycle is 15 mph and that of train is twice of bicycle . If she spend 20 min . more on bicycle, then total time taken by her from going to office from her home ?

A girl goes to her office for work which is 50 miles . She goes to her office few distance by bicycle and remaining by train . The speed of bicycle is 15 mph and that of train is twice of bicycle . If she spend 20 min . more on bicycle, then total time taken by her from going to office from her home ?