SSC Government Jobs Exams Numerical Ability Time and Work

A can do a piece of work in 20days and B in 30 days. They worked together for 7 days and then both leave the work. Then C alone finishes the remaining work in 10 days. In how many days will C finish the full work?

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SSC Other Question

Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did, the work would have been completed in 3 days. To, complete the job alone, A would require how many days? The least five-digit perfect square number which is divisible by 3, 4, 5, and 8 is