Suraj and Pankaj can mow their lawn in 20 minutes. If Suraj can alone mow the lawn in 30 minutes. Then how long would it take to mow the lawn by Pankaj alone?
1
60 minutes
2
45 minutes
3
30 miniutes
4
40 minutes
5
None of these
Suraj and Pankaj can mow their lawn in 20 minutes. If Suraj can alone mow the lawn in 30 minutes. Then how long would it take to mow the lawn by Pankaj alone?