Question

a man had walk a certain distance.he covered two thirds of it at 4 kmph and the remaining at 5 kmph.if the total time taken is 42 minutes,find the total distance.​

Answer 1

Answer:

3 km

Step-by-step explanation:

Let the distance be 'x' km.

Therefore total time taken = (2x/12)+(x/15) hr = 42 min

=> (2x/12)+(x/15)=(42/60)

=> (10x+4x)/60=(42/60)

=> 14x=42

=> x = 3 km