Question

5) Ravi and Prasad can complete a job in 12 days working together. Prasad alone can
complete it in 16 days. Both of them worked together for 4 days and then Prasad left.
How long will Ravi take to complete the work?
1) 36 days 2) 32 days
3) 42 days
4) 38 days​

Answer 1

Answer:

32 days

Step-by-step explaation:

Answer 2

Answer:

32 days

Step-by-step explanation:

• R+P can complete the work in 12 days i.e they complete 1/12th of the work in a day.

• P can complete it in 16 days i.e he can complete 1/16th of the work in a day.

• R can therefore complete (1/12 -1/16) th of the work in a day.

                                                     =1/48th

R+P worked together for 4 days i.e (1/12 * 4 ) of the work would have been completed.        

=1/3rd of the work

Rest =2/3rd of the work

days taken by R= Amt of work / work done by him in a day    

=(2/3) / (1/48)=32 days