Question

Ravi and Rishi can mow the lawn in 12 hours Ravi can Mow one by three of the lawn in 6hrs .how long will Rishi take to mow the lawn of his own

answer it correct​

Answer 1

Answer:

36 hrs

Step-by-step explanation:

Ravi + Rishi 1hr work =1/12

Ravi mow 1/3 work in 6hr, in 1hr Ravi work = 1/18

1/18 + x = 1/12

2/36 + x = 3/36

x =1/36

Rishi can do 1 work in 36hrs