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When distance travelled is same, then average speed = 2ab/(a + b) (where 'a' and 'b' are two different speeds) . Therefore, required average speed = (2 x 75 x 45) ÷ (75 + 45) = (6,750/120) = 56.25 km/h
A cuboidal box with dimensions 12.5 cm (length), 7.5 cm (breadth), and 10 cm (height) is open from the top. The box is to be painted from the outside. I...
The perimeter of 4 squares is 24 cm, 36cm, 40 cm, and 44 cm respectively. What will be the area of the square having perimeter equal to sum of edges of ...
If √̅1̅2̅-̅2̅√̅3̅5̅ + √̅8̅+̅2̅√̅1̅5̅ = √a + √b, where a and b are positive integers, then the value o...
The volume of cone is 1597.2 cm3. If its height is 1.4 cm then find the radius of the cone.
If the area of square is 225 cmsup2; and the breadth of rectangle is 20% more and the length is 30% more than the side of the square, then find the the ...
If the area of a square field is 361 m2, then find the diagonal of the square field.
A Sales Executive gets a commission on total sales at 10%. If the sale is exceeded Rs.15,000 he gets an additional commission as a bonus of 5% on the ex...
A cylindrical tank is filled at the rate of 6 liters per minute. If the tank is 2 meters tall and has a radius of 50 cm, how long will it take to fill t...
At the end of a business conference the ten people present all shake hands with each other once. How many handshakes will there be altogether?
A right circular cylinder having total surface area of 18480 cm2 is immersed in a vessel completely filled with water. If the height of the c...
