Ramesh takes 6.5 hours to go from city A to city B at 3 different speeds 30 kmph, 45 kmph, and 60 kmph covering the same distance with each speed. The respective mileages per liter of fuel are 11 km, 14 km and 18 km for the above speeds. Ramesh’s friend Arun is an efficient […]
Cities M and N are 600km apart. Bus A starts from city M towards N at 9AM and bus B starts from city N towards M at the same time. Bus A travels the first one-third of the distance at a speed of 40kmph, the second one-third at 50kmph and the third one-third at 60kmph.
Two friends A and B simultaneously start running around a circular track . They run in the same direction. A travels at 6 m/s and B runs at b m/s. If they cross each other at exactly two points on the circular track and b is a natural number less than 30, how many values
The ratio of length and breadth of a rectangle is 3 : 2 respectively. The respective ratio of its perimeter and area is 5 : 9. What is the breadth of the rectangle in metres ? Sol: Let the length and breadth of the rectangle be 3x and 2x respectively Then, Perimeter = 2 (3x
Find the breadth and the perimeter of the rectangle if its area is 96 cm2 and the length is 12 cm. A. 10 cm, 40cm B. 12 cm, 42cm C. 8 cm, 40cm D. 12 cm, 40cm Sol:
The length of a rectangle is twice its breadth. The perimeter of the rectangle is 120 cm. Find the length and breadth of this rectangle. Also find its area, Sol: Let the breadth of the rectangle is b cm .So, the length of the rectangle is 2b cm We know that the perimeter of rectangle
Total surface area of a cube is 600 sq cm. So the perimeter of each of its faces is ______. Sol:
Total surface area of a cube is 600 sq cm. So the perimeter of each of its faces is __. Read More »
The length of a rectangle is 3 units more than breadth and perimeter is 22 units. Find the breadth and length of rectangle Sol: Let breadth= x units Length= x+3 units Perimeter= 2(l+b) 22= 2(x + x+ 3) 22/2 = 2x+3 11= 2x+3 11-3 = 2x 8= 2x 8/2 = x x= 4.
Ratio of length of a rectangle is 3:2. If the length of the rectangle is 5m more than the breadth, find the perimeter of the rectangle. Sol: Ratio of length and breadth of a rectangle =3:2 Let length =2x m and Breadth =2x Also, I of rectangle is 5m more than the breadth
A jar contains a mixture of milk and water in the ratio 4:3, respectively. If 4-litres of the mixture is taken out, then the quantity of water left in the mixture will be 39 litres. Find the original quantity of the mixture in the jar. Sol: Total quantity of mixture after removing 4-litres = 39
