जॉइन Examsbookउत्तर : 2. "40"
A can complete 9/10 part of a work in 31 days. After that, with the help of B he can complete the remaining work in 4 days. In how many days will A and B together can complete that work ?5
प्र: A can complete 9/10 part of a work in 31 days. After that, with the help of B he can complete the remaining work in 4 days. In how many days will A and B together can complete that work ?
- 136false
- 240true
- 342false
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उत्तर : 2. "40"
व्याख्या :
Answer: B) 40 Explanation: Remaining work = 1 - 9/10 = 1/10 => A & B together completes 1/10 of work in 4 days => 1 work can completed in ------ ? days Let it be x days => 4110=x1 => x = 40 days. Hence, A & B together can complete the work in 40 days.