defence exam CRPF ASI Technical Mock Test 2023 Quantitative Aptitude Time and Work Work Efficiency

A and B can do a piece of work in 45 and 40 days, respectively. They began the work together but A left after some days and B finished the remaining work in 23 days. After how many days did A leave?

1

11 days

2

9 days

3

12 days

4

10 days

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