Question

How long would A take to complete the work?
Statements :
I. B is half as efficient as A.
II. B arid C together complete the work in 8 days
III.A and B together complete the work in 4 days

• A. Only III is sufficient
• B. I and II are sufficient
• C. All of I, II and III are necessary
• D. Only I and III are sufficient

Answer 1

Answer: (D)

Only I and III are sufficient

$Lettheworkdonebyain1daybea.workdonebybeachday=\frac{a}{2}\frac{3a}{2}=\frac{1}{4}Thishelpsustofindawithoutusingstatement2$