Bheem can eat few laddus in 20 days and kalia can eat same number of laddus in 30 days. In how many days can Bheem and Kalia together eat the laddus?

A and B can build a certain wall in 20 days and 30 days respectively. In how many days can they together build two such walls?

If 15 oxen or 20 cows can eat the grass of a field in 80 days, then in how many days will 6 oxen and 2 cows eat the same grass?

A alone and B alone can do a work in respectively 20 and 5 days more than both working together. Find the number of days required if both work together.

A can do a piece of work in 25 days and B can do the same work in 30 days. They work together for 5 days, how much of work is left?Options1126319/301129315/30

12 girls can do a a piece of work in 30 days, working 8 hours a day . In how many days 18 girls can do the same piece of work while working 4 hours a day?