quantitative aptitude test 120

Test # 120
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1. A can do certain job in 25 days which B alone can do in 20 days. A started the work and was joined by B after 10 days. The number of days taken in completing the work was :

Quantitative Aptitude
Quiz Index
1300 questions in 130 tests. Each test contains 10 questions.
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put on weight or put weight on
to gain weight
My friend has been putting on weight since he stopped working.
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