Question
The Distance between two cities, Dehradun and Delhi is
220 km. Rakesh started from Dehradun at 9.30 am at a speed of 40 Km/hour and Suresh started from Delhi after an hour at 50 Km/hour. Find out at what time they will meet.Solution
Suppose they meet x hours after 9:30 am Distance covered by Rakesh in x hours = 40x km Distance covered by Suresh in (x-1) hours = 50(x-1) km ∴ 40x+ 50(x-1) = 220 x=3 So they meet at 9:30 + 3 = 12:30 pm
The ratio of length and breadth of a rectangular field is 5:3. If the total cost of surrounding it at the rate of Rs 7.50 per meter is Rs 3000, then fin...
If the length and breadth of a rectangle are increased by 8 m each, its area increases by 544 m². The ratio of the perimeter of the square to that of t...
A hollow cylindrical pipe is made of iron. The difference between the outer and inner curved surface area is 176 cm². The height of the pipe is 28 cm, ...
A hemispherical bowl with an internal radius of 15 cm is full of liquid. This liquid will be filled in cylindrical bottles with a radius of 5 cm and a h...
The sum of the length, width, and height of a cuboid is 30 cm. If the length of the diagonal of the cuboid is 25 cm, find the total surface area of the ...
Find the curved surface area of a cone whose height is 6 m and radius is 8 m. (in m 2 ) (approximate value) (The value of π is 22/7)
The circumference of a circle is 66 cm and the length of the rectangle is 4 times the radius of the circle. Find the area (in cm2) of the rec...
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...
Suppose the ratio of the radius to the height of a cylinder is 2:3, then what is the volume of the cylinder when the total surface area of the cylinder ...
The perimeter of a rectangular field is 70 metres and its area is 100.5 m2 . What is the length of the diagonal of this field?
Relevant for Exams:
