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If a student had walked 1km/hr faster.he would have taken 15 minutes less to walk 3 km. find the rate at which he was walking.



3km/hr :)

3/x - 3/x+1 =15( in min so convert to hrs by dividing by 60)

this should be your equation 

1 3 1
3kmph. He was walking 3kmph so if he walked 1kmph faster it wold have taken him 15min less
0 0 0
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