Question

if a train runs at 40kmph it reaches its destination late by 11 minutes but if it is 50 kmph it is late by 5 minutes only find the distance to be covered by the train

Answer 1

the train runs at 40 kmph and reaches late by 11 min

at 50 kmph reaches late by 5 min

let the time be t and distance be d
time × distance = speed
5 min=1÷12 hrs = 0.083
11min = 11÷60 hrs 0.183

deadline time = {(speed)÷(distance)} - (extra time required)

t = (40÷d)-0.083
also,t= (50÷d)-0.183

thus,. 40÷d - 0.083 = (50÷d) - 0.183
(solving ahead)
d=100 km
(check it unit:-km)

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