the ratio of the efficiencies of P Q and R is 4:5:6 . if they completed a job working together , find the fraction of the job done by P .
Hello,
The ratio of efficiency is A : B : C is 4: 5 : 6
Let work done is unity.
So, the total work done is 4x+ 5x + 6x = 1
So, x = 1 / 15
Hence, the total fraction of work done by A = 4x = 4 / 15
Talking percentage wise, Work Done by A = 4 x 100 / 15 %
So, Work Done by A = 26.67%
Best Wishes.
Since they completed the job together there amount of job done will be in the ratio of their efficiency that is 4:5:6.
Now the fraction of job done by P is 4/4+5+6
That is 4/15
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