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
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1300 questions in 130 tests. Each test contains 10 questions.
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in no uncertain terms
in very specific and direct language
I told my neighbor in no uncertain terms that I wanted the music to stop.
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