Question

X'works twice as fast as Y. If Y alone can complete a job in 18 days, find how many days will X and Y

together take to complete the job.​

Answer 1

Answer:

6 days

Y alone can finish work in 18 days

X works twice as fast as Y

So, Days taken by X to finish the work= Y/2= 9

Days Taken by X & Y to finish the work together= 1(1/9+1/18)

= 1{(2+1)/18}

= 1(1/6)

= 6 days

Answer 2

Answer:

I don't understand the question