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Pipe L fills the pool in 30 hours, so its rate is {1/30} per hour. Pipe M fills it in 45 hours, so its rate is {1/45} per hour. Together, their rate is {1/30} + {1/45} = {3/90} + {2/90} = {5/90} = {1/18}. So, both pipes together will fill the pool in 18 hours.
If the radius and height of a right circular cylinder are increased by 22% and 28%, respectively, what is the percentage increase in its volume? (Use π...
The total area of the piece of glass square 1296 Cm² is. Which is placed above a table. The width between the table and the edge of the glass piece is ...
A stone is thrown vertically with the velocity which would just carry it to height of 100 feet. Two seconds later another stone is projected vertically ...
The area of the circumcircle of an equilateral triangle is 3π cm². The perimeter of the triangle is:
The ratio of the number of English books to Hindi books in a library shelf is 5:3. If 108 Hindi books are written by Pradeep, which constitutes 36% of t...
The sum of the radii of spheres A and B is 14 cm. the radius of A being larger than that of B. The difference between their surface areas is 112π. Wh...
An army of 2100 men has provision for 50 days. After 10 days due to injuries some of them left and the food were now enough for next 50 days for remaini...
If the length of a rectangle is increased by 15% and its breadth is decreased by 5%, then the area of the rectangle will be increased or decreased by ho...
If the diameter of the cylinder is 14 cm and height of the cylinder is 2cm. Find the sum of the curved surface are and total surface area?
