The efficiencies of A B and C are in the ratio 2 5 3 Working together they can compete a task in 9 ...........

Quantitative Aptitude (CGL) Time and work

The efficiencies of A, B and C are in the ratio 2 : 5 : 3. Working together, they can compete a task in 9 days. In how many days

will C alone complete 40% ofthat task?

This questions was previously asked in

SSC CGL 12 June 2019 Shift-3

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Explanation:

let the efficiencies of A , B and C are 2x,5x and 3x respectively.
Total work done by A, B and C in 9 days = (2x + 5x + 3x)x 9 = 90x Units.
40% of total work = $_{100}^{90x\times 40}$
C alone can do 40% of total work in $_{100\times 3x}^{90x\times 40}$ = 12days