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Directions: The following questions are accompanied by three statement (A) or (I), (B) or (II), and (C) or (III). You must determine which statement(s) is/are sufficient/necessary to answer the questions.C. One-fourth of the work is done by 8 workers in 12.5 days.1). Any two of them2). Only B3). Either A or C only4). A and C together |
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Answer» Let, the WORK will be completed in = x days The worker’s efficiency = a/day A. from this we get, ⇒ 8 × 40 ×a = 40/100 ⇒ a = 1/800 According to PROBLEM, ⇒ 32 × x ×a = 1 ⇒ x = 800/32 ⇒ x = 25 ∴ 32 workers complete the work in = 25 days From A we get the value. B. from this we get, ⇒ 160 × 5 × a = 1 ⇒ a = 1/800 According to problem, ⇒ 32 × x × a = 1 ⇒ x = 800/32 ⇒ x = 25 ∴ 32 workers complete the work in = 25 days From B we get the value. C. from this we get, ⇒ 16 × 12.5 × a = ¼ ⇒ a = 1/800 According to problem, ⇒ 32 × x × a = 1 ⇒ x = 800/32 ⇒ x = 25 ∴ 32 workers complete the work in = 25 days From C we get the value. ∴ We can get the value from any of the three. |
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