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Let the total work done to plough field ‘A’ = 75 units (LCM of 15 and 25) Then, efficiency of a buffalo = (75/15) = 5 units/day Efficiency of a bull = (75/25) = 3 units/day Total work required to plough field ‘B’ = 75 × 1.26 = 94.5 units Combined efficiency of 2 bulls and 3 buffalo = 3 × 2 + 3 × 5 = 21 units So, number of days required to plough field ‘B’ = 94.5/21 = 4.5 days
The volume and height of a cylinder are 2662 cm3 and 7 cm. Find the radius of the cylinder.
A rectangular hall has a length of 32 meters and a perimeter of 96 meters. If the entire hall is to be carpeted at a cost of Rs. ...
The weight of a cubic metre metal is 1215 kg. It is melted and cast into a square rod of 9m length. A solid cube of maximum size is taken out from one e...
On a rectangular wall of length 35 metres and height 30 metres, there is a window in the shape of triangle surmounted on a square. If the base of triang...
If the ratio of the heights of two cones is 3:2 and the diameters are in the ratio 5:6, what is the ratio of their volumes?
The lateral surface area of frustum of a right circular cone, if the area of its base is and the diameter of circular upper surface is 4 cm and slant he...
A square has an area of 289 cm². The rectangle's breadth is 20% more, and its length is 50% more than the square's side. What is the area ratio of the ...
If 35 grams of sugar is further added to a 20 percent sugar solution, the solution then becomes a 36 percent sugar solution. What was the initial quanti...
Find the area of sector of a circle whose radius is 21 cm and angle subtended by the sector at centre of circle is 45 ° .
