Question
Side of a square is 20% less than the length of a
rectangle. The area and width of the rectangle are 2520 cm² and 36 cm. What will be the perimeter of the square?Solution
ATQ,
Length of rectangle = (2520 / 36) = 70 cm
Side of square = 0.8 × 70 = 56 cm
Required perimeter = 4 × 56 = 224 cm
A clock has a cost price of Rs. 1,800. It is marked at a price that is 50% higher than the cost price and then sold after two consecutive discounts of 1...
A farmer has some chickens and some cows. Find out the total number of chickens if the total number of heads is 50 and the total number of feet is 160. ...
A child is half as efficient as a man. How much time do 8 children need to build a wall that is 60% the size of the wall built by the 12 men in 15 days?
Three workers W1, W2 and W3 got work from the contractor. In 5 days, ‘W1’ completed 25% of work. ‘W2’ is 20% less efficient than ‘W1’ but ta...
An article is initially marked at 40% above its cost price. It is then sold after applying two successive discounts - one of 12% and another of Rs. 56. ...
Find the simplified value of the given expression: (1/4) of 19 x 12 - (2/5) of 135 + 42.5 x 8 - 142
Simplify the following expression: (5x + 7) 2 + (5x – 7) 2 .
Two cars start from a place with a speed of 30 km/hr at an interval of 10 minutes. What is the speed of a man coming from the opposite direction towards...
If x + 1/x = 2 then find x32 + 1/(x32)
Find the fourth proportion of 12.5, 17.5 and 27 respectively.
Relevant for Exams:
