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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

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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