Question

arjun is twice efficient as arun. Arjun completes job in 30 days before Arun if they work together how long they will take to complete job​

Answer 1

Answer:

20 days

Step-by-step explanation:

Arjun is Twice as efficient as Arun.

Consider efficiency or work per day for Arjun = 2 and Arun = 1.

Consider No of days require for arun to Complete a work = x.

Arjun complete job 30 days before Arun. Hence no of days require for Arjun complete a work is (x-30) days.

x = 2 (x-30)

x = 60

If they both work together total efficiency or no of work per day = 3

No. of days take If they Work together = 60/3 = 20 days