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Downstream speed = x+y Upstream speed = x-y Speed = distance/time ∴ x+y = D/T .................... (i) x-y = D/3T .................... (ii) From (i) & (ii) 2x = D/T + D/3T 2x = (3D+D)/3T = 4D/3T x = 2D/3T and; y = D/T - 2D/3T = D/3T x/y = 2D/3T × 3T/D x/y = 2
If the curved surface area and the radius of a cylinder are 660 cm2 and 14 cm, respectively, then find the volume (in cm3) of the ...
The cost of fencing a rectangular field at the rate of Rs. 3/metre is Rs. 270. If the length of the field is 11 metres more than its breadth, then find ...
A spherical ball with a radius of 14 cm is melted and cast into smaller solid cubes, each with a side length of 7 cm. How many such cubes can be formed?
If the area of a triangle is 864 cm2 and base: corresponding altitude is 3:4, then the altitude of the triangle is:
A right circular cylinder having total surface area of 2710.4 cm2 is immersed in a vessel completely filled with water. If the height of the ...
A solid metallic cone with a radius of 6 cm and height of 12 cm is melted and recast into smaller cones with a radius of 3 cm and a height of 4 cm. How ...
What is the difference between (in m2) the area of a circular field of radius 28 metres and area of a rectangular piece of land having its di...
Determine the slant height of a cone with a volume of 1,884 cm³ and a base radius of 15 cm. (Use π = 3.14)
Mr. Shiva invested equal amount of money in two private firms which gives 15% simple interest per annum for 3.5 years and 5 years respectively. If the d...
Cost of two types of pulses is Rs.25 and Rs, 30 per kg, respectively. If both the pulses are mixed together in the ratio 2:3, then what should be the pr...
