The j&k express from delhi to srinagar was delayed by snowfall for 16 minutes and made up for the delay on the section of 80 km travelling with a speed of 10km/hr higher than its normal speed. Find the original speed of the j &k express
A. 60
B. 20
C. 40
D. 50
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let the normal speed be x
Normal time in hour-Actual time in hour=reduction in time in hour
80/x-80/(x+10)=16/60,
or,x(x+10)=3000,
or,x=50
let the normal speed be x
Normal time in hour-Actual time in hour=reduction in time in hour
80/x-80/(x+10)=16/60,
or,x(x+10)=3000,
or,x=50
ans = 50
80/v-80/(v+10)=16/60
Correct Answer = 50 km/h