A car was on its way from Town Q to Town R. After covering ³₅ of its journey, it passed a bus which was travelling at an average speed of 60 km/h. 10 hours later, the car reached its destination, but the bus was still 28 km from Town R. If the car had also started from Town Q, how long would it take to travel from Town Q to Town R? Express your answer as a mixed number.
Fraction of the journey left after the car passed the bus
= 1 - ³₅
= ²₅

²₅ of the car's journey = (10 x 60) + 28 = 628 km
¹₅ of the car's journey = 628 ÷ 2 = 314 km
⁵₅ of the car 's journey = 5 x 314 = 1570 km

Speed of the car
= 628 ÷ 10
= 62.8 km/h

Time taken for the car to reach Town R
= 1570 ÷ 62.8
= 25 h

Answer(s): 25 h