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Let speed of P is 2x and speed of Q is x. According to question, 360/(2x−x) = 6 min ⇒ 2x – x = 60 meters/min ⇒ x = 60 meters/min Therefore the speed of Q is 60 meters/min. Time taken by Q = 1080/60 = 18 minutes
The combined height and radius of a right circular cone total 31 cm, with the height exceeding the radius by 17 cm. Calculate the curved surface area of...
(180/3)% of the raindrops could have been collected, when 8 cm of rain has fallen on a part of land of area 2.5 km2, in a tank having a 200 m...
The sum of the radius and height of a cylinder is 19m. The total surface area of the cylinder is 1,672 m² . What is the volume of the cylinder?
The sum of the perimeters of a square and a rectangle is 120 metres. If the sum of the length and breadth of the rectangle is 30 m, then find the area o...
The volume of cone is 1900.8 cm3. If its height is 1.4 cm then find the radius of the cone.
Angle bisectors of Q and R meet at point S, inside the triangle PQR. If angle QSR = 116˚ , then the measure of angle P is:
A and B together started a business with initial investment in the ratio of 3:5, respectively. The time-period of investment for A and B is in the ratio...
Each side of square ‘A’ is 7 cm less than that of square ‘B’. The perimeter of a rectangle is 5 times the difference of the perimeters of the tw...
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...
