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san gohan

· started a discussion

· 1 Months ago

verify please (Question: 214469.0 )

In Question it is given relation between A&B , C&D but no relation of efficiency between A &C . How can u take A& C both equi eff?

Question:
A works thrice as efficiently as B and C works thrice as efficiently as D. If A and C together can complete a piece of work in six days , find the number of days that A,B, C and D together take to complete the same work.
Options:
A)

5

B) 6
C) Can’t be determined
D) None of these
Solution:
Ans: (d)

  A : B

\(\eta\)3 : 1

  C  : D

\(\eta\) 3 : 1

(A+C) x 6

= (A+B+C+D) x t

6 x 6 = 8 x t

t = \(\frac{36}{8}=\frac{18}{4}=\frac{9}{2} \)

t = \(4\frac{1}{2} days\)

For Video Solution Click on the link given below:

Knowledge Expert

· commented

· 1 Months ago

Dear student
Please refer video solution,
and solve the question again.

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