जॉइन Examsbookउत्तर : 4. "80 km"
Mr. Karthik drives to work at an average speed of 48 km/hr. Time taken to cover the first 60% of the distance is 20 minutes more than the time taken to cover the remaining distance. Then how far is his office ?5
प्र: Mr. Karthik drives to work at an average speed of 48 km/hr. Time taken to cover the first 60% of the distance is 20 minutes more than the time taken to cover the remaining distance. Then how far is his office ?
- 140 kmfalse
- 250 kmfalse
- 370 kmfalse
- 480 kmtrue
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उत्तर : 4. "80 km"
व्याख्या :
Answer: D) 80 km Explanation: Let the total distance be 'x' km. Time taken to cover remaining 40% of x distance is t1=40×x100×48 But given time taken to cover first 60% of x distance is t2=t1+2060hrs t2=60×x100×48 ∴60×x100×48= 40×x100×48+2060 x=80 km.