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Downstream speed of the boat = 150/15 = 10 km/hr Upstream speed of the boat = 120/12 = 10 km/hr Speed of boat in still water = (10 + 10)/2 = 10 km/hr Distance travelled by the boat in still water in 5 hours = 10 × 5 = 50 km
In what ratio coffee at 255 Rs/kg should be mixed with the coffee at 310 Rs/kg so that after mixture its rate become 270 Rs/kg if the quantity of 1st ty...
If the area of a square field is 625 m2, then find the diagonal of the square field.
A rectangular ground is 75 metre long and 55 metre broad. If two 15 metre wide paths one parallel to the breadth and one parallel to the length, of the�...
A cylindrical tank of 28 cm base radius is partly filled with water. How many spherical iron balls of 1cm radius are added in it in order to increase th...
A conical tent of height 5m and base diameter 24m was erected by a company in a park. Find the curved surface area of the tent (in m²).
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. ...
A cylindrical tank has a radius of 8 meters and a height of 12 meters. If the tank is filled with water, how much time will it take to fill the tank com...
Find the surface area of the smallest cube that can perfectly fit a sphere of volume 47916π cm3 inside it.
A hemisphere has a total surface area of 604.8 cm². Calculate the volume of a sphere that has the same radius as the given hemisphere. (Take π = 3.15)...
