10 men can finish a piece of work in 15 days. 8 women can finish the same piece of work in 25 days. Only 10 women started working and in few days completed certain amount of work. After that 3 men joined them. The remaining work was completed by 10 women and 3 kmen together in 5 days. After how many days 3 men joined 10 women

A sells an item at 20% profit to B. B sells it to C at 10% profit. C sells it to D at INR 116/- profit. Difference between the cost price of D and cost price of A was INR 500/-. How much did B pay to A for the item

The length of a rectangle is 4m more than the side of a square and the breadth of the rectangle is 4m less than side of the same square. If the area of the square is 576 sq m, what is the area of the rectangle ? (in sq m)

A starts a business with a capital of INR 1500/-, B joins the business 6 months later from the starts of the business and C joins the business 8 months later from the start of the business. In the end of the year their respective share in profit was in ratio 5:3:3. What is the sum of amount put in the business by B and C together 

A boat can travel 4.2 km upstream in 14 min. If the repsective ratio of speed of the boat in still water and speed of the stream is 7 : 1. How much time still the boat take to cover 17.6 km downstream ? (in min)

In a 140 litre of mixture of milk and water, percentage of water is only 30%. The milkman gave 20 litre of this mixture to a customer. Then he added equal quantities of pure milk and water to the remaning mixture. As a result the respective ratio of milk and water in the mixture became 2:1. What was the quantity of milk added ? (in litres)