जॉइन Examsbookउत्तर : 4. "6 days"
Amar can do a piece of work in 10 days. He works at it for 4 days and then Arun finishes it in 9 days. In how many days can Amar and Arun together finish the work ?5
प्र: Amar can do a piece of work in 10 days. He works at it for 4 days and then Arun finishes it in 9 days. In how many days can Amar and Arun together finish the work ?
- 14 daysfalse
- 28 daysfalse
- 33 daysfalse
- 46 daystrue
- उत्तर देखेंउत्तर छिपाएं
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उत्तर : 4. "6 days"
व्याख्या :
Answer: D) 6 days Explanation: 4/10 + 9/x = 1 => x = 15 Then both can do in 1/10 + 1/15 = 1/6 => 6 days