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When the speed of a train is increased by 20%, it takes 20 minutes less to cover the same distance. What is the time taken to cover the same distance with the original speed?
- A140 minutes
- B120 minutes
- C100 minutes
- D80 minutes
Answer not set
Discussion 1
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CCommunity
Suppose the distance is ‘x’ km and speed is ‘n’ km/minutes;
According to given condition;
x/n - x/1.2n = 20
⇒ (0.2x/1.2n) = 20
⇒ x/n = 120 minutes
Here ‘x/n’ is the time taken to cover the distance with the original speed.
∴ Train will take 120 minutes to cover the same distance with the original speed.
According to given condition;
x/n - x/1.2n = 20
⇒ (0.2x/1.2n) = 20
⇒ x/n = 120 minutes
Here ‘x/n’ is the time taken to cover the distance with the original speed.
∴ Train will take 120 minutes to cover the same distance with the original speed.