A park is 25 m long and 21 m wide. A 2 m wide path is to be laid in the middle of the park parallel to length and breadth. What is the cost of laying the path if it costs ₹ 20 per sqm.

16 persons can do a work in 10 days working 9 h a day. In how many days can 12 persons do the work while working 8 h a day?

A hall is 5 m long, 4 m wide and 3 m high. What is the cost of white washing its walls and roof at a rate ₹25/m² and laying of marble floor at a made. (question text incomplete as printed)

A runs 10% slower than B and reaches the destination 25 m behind B. What is the distance they were to run?

In order to show that √7 is irrational by method of contradiction we assume that ..........

Pipes A and B can separately fill a tank in 75 and 90 min respectively. Pipe C can empty the same tank in 3 h. All the three pipes are opened simultaneously. After half an hour, pipes A and B are stopped while pipe C continues its work. How long will pipe C take now to empty the…

The distance between the parallel lines 4x − 3y + 5 = 0 and 4x − 3y − 2 = 0 is

A invested ₹5000 for 24 months, B invested ₹6000 for 15 months and C invested ₹8000 for 12 months. A charged 10% of profit for his expertise of business. If ₹25000 was the profit after two years, what is B's share in profit?

n³ + 7n + 3 is divisible by k for all natural numbers n. Then k is ..........