Question

A b c together take 20 days whereas b takes twice as long as a and c take

Answer 1

According to the given condition,

b=2a

b=2c

2a=2c

a=c

a+b+c=20

a+2a+a=20

4a=20

a=20/4

a=5

c=5

b=2a=10

Hope it helps! Thank you.