When the speed of a train is increased by $20\%,$ it takes $20$ min less to cover the same distance. What is the

When the speed of a train is increased by $20\%,$ it takes $20$ min less to cover the same distance. What is the time taken to cover the same distance with the actual speed?

A. $1$ hour $10$ min
B. $1$ hour $15$ min
C. $2$ hours
D. $2$ hour $50$ min
E. $3$ hours

OA C

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