Question

Solve the following
(4-5-20)
1. P and Q can do a piece of work in 20 days and 30 days respectively they started the work
together and O left after some days of work and P finished the remaining work b5 days After
how many days fromthe start did o leave?​

Answer 1

Answer:

8 Days

Step-by-step explanation:

Supose A left after x days Then Work of (A + B) for x days =  

28

x

​  

+  

35

x

​  

 Work of B for 17 days =  

35

17 ∴  

28

x

​ +  

35

x

​+  

35

17

​=1⇒  

140

5x+4x

​ =1−  

35

17

​=  

35

18

​  ⇒  

140

9x

​ =  

35

18

⇒x=  

35×9

18×140

​=8 days