"A works twice as fast as B. If B can complete a work in 12 days
Channel: Doubtnut
Date: 05/04/2020

"A works twice as fast as B. If B can complete a
 work in 12 days independently, the number of days in which A and B can
 together finish the work is 
`4\ d a y s`
b. `\ 6\ d a y s`
c. `8\ d a y s`
d. `18\ d a y s`"