Question

Michaelwasthebestdrivertheworldhadeverseen.Hisspeedyracingcaraveraged100 kph.IntheBigRace,his racing carcamefirstinarecordtimeof1hourand10minutes.
During the Big Race, Michael’s racing car had one pit stop (refueling and repair station) which took 10 minutes. During thepitstop,hisracingcarfueledupwithan
extra25litres of petrol.Hisracingcarfinished the race with only 2 litres of petrol
left.
If Michael’s racing car used half a litre of petrol per mile, how much petrol was in the
fuel tank when the race started?

Answer 1

Given : Michael speed  racing car averaged 100 kph . His Car took 1 hr 10 mins including 10 min one pit stop for refuling & repair. Michael’s racing car used half a litre of petrol per mile. 25 litre fuel was filled at stp and 2 Litre was left at end of race

To find :  how much petrol was in the fuel tank when the race started

Solution:

Car Speed  = 100 kph

Time taken = 1 hr  and 10 mins

Stop  time = 10 mins

Driving time = 1 hr

Distance = 100  * 1  =  100 miles

Michael’s racing car used half a litre of petrol per mile

=> Fuel Used  = (1/2) * 100 = 50 Litre

Petrol Left  = 2 Litre

Hence fuel in Car = 50 + 2 = 52 litre

25 litre was filled in between

Hence Fuel in Starting = 52 - 25 = 27 Litre

27 Litre fuel was there in tank when race Started

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