Question

a and b together can do a certain work in 16 days whereas b and c can do it in 20 days. if a is twice as good a workman as c then b alone can do the same work in​

Answer 1

Answer:

26(2/3)

Step-by-step explanation:

A=2C

for 1day,

A+B+B+C=(1/16+1/20)

A+2B+C=(9/80)

2C+2B+C=9/80

3C+2B=(9/80)

3(1/20-B)+2B=9/80

B=3/80

B,

3/80 completed in 1D

1 "" 80/3=26(2/3)