Let the speed of boat in still water =B and speed of stream =S then B=10km/h and S= 8km/h So now Speed of Boat in upstream = B-S=2km/h Speed of Boat in Downstream =B+S=18km/h ATQ- t=540/18+540/2 =30+270 =300hours.
O is the Centre of the circle passing through the points A, B and C such that ∠BAO=30 ° , ∠BCO=40 ° and ∠AOC=x ° , what is the value of x?
...The diameter of the base of a cylindrical drum is 14 cm and its height is 12 cm. The drum is full of water and the water from the drum is transferred to...
Two circles with centers B and D have radii DA = 8 cm and BC = x cm, respectively. AC is tangent to both circles. If DB and AC intersect the point E, AE...
A metallic sphere of radius 4.2 cms. Is melted and recast into the shape of a cylinder of radius 6 cms. Height of the resultant cylinder would be:
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 ratio of the length of a rectangle, breadth of the rectangle and the diameter of a circle is 14:5:7. If the area of the circle is 616 cm2...
In a two cylinders the ratio of the radius of the two cylinders is 2:3 and their heights are in the ratio 5:3, then what will be the ratio of their volu...
If the income tax is increased by 14% then net income is reduce by 6%. Find the rate of income tax?
Consider a parallelogram where the ratio between the height and the base is 14:9. Given that the area of this parallelogram is 1134 square centimeters,...
A circle is inscribed in a square an equilateral triangle of side 10 √2 cm is inscribed in that circle the length of the diagonal of the square is. <...
