quantitative aptitude test 109

Test # 109
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1. A and B together can perform a work in 10 days. A alone can perform the same work in 30 days. In how many days can B alone do this work ?

Quantitative Aptitude
Quiz Index
1300 questions in 130 tests. Each test contains 10 questions.
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good-for-nothing
to be worthless
The man is a good-for-nothing and lazy worker.
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