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CBSE Class 10 Answered

the distance between office and home is 60 km. one day he covers half of the distance at twice its usual speed and the rest of the distance at half the speed. on that day it took him 75 min more then the usual time. calculate its usual speed
Asked by makheejaniharika | 11 Mar, 2022, 04:45: PM
answered-by-expert Expert Answer
Distance space equals space 60 km let space usual space speed space be space straight x space km divided by hr Now Time equals straight D over straight S by space given space condition 75 over 60 equals fraction numerator 30 over denominator 2 straight x end fraction plus fraction numerator 30 over denominator begin display style straight x over 2 end style end fraction solving space we space get straight x space equals space 60 space km divided by hr
Answered by Arun | 16 Mar, 2022, 09:37: AM

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