A roller is 4 m long and has a diameter of 0.7 m. It takes exactly 2000 rotations of the roller to level a road. If the cost of using the roller is Rs. 4 per square metre, then the total cost of levelling the road is (Assume π = 22/7):

In a company, the average salary of the boys is Rs. 50000. The average salary of all the employees is Rs. 48000. There are 80 boys in the company and the average salary of the girl is Rs. 40000. What is the number of girls working in the company?

From the passage: Total global exports: $144,000 billion. The value of exports of each c...

The ratio of the value of exports between the total exports of USA and Japan to the total exports of Australia and France is

Which of the following equations best describes the graph given below? (The graph shows two pairs of lines meeting the x-axis at (−6, 0) and (6, 0), passing through (−8, 2), (−8, −2), (8, 2) and (8, −2).) [Figure: see page 9 of source PDF]

Meera and Sarika attempted to solve a quadratic equation in x. Sarika made a mistake in reading the coefficient of x and obtained the roots as 12 and 16. Meera made a mistake in reading the constant term of the equation. She obtained the roots as −22 and −6. The correct root(s) i…

A shopkeeper claims to sell rice at cost price. He uses a false weight with the intention of selling rice at 25% profit. After selling Rice to a customer, he realizes that the customer has paid 10% less than what he should have paid. What is the actual profit percentage made by t…

In a 1000 metre race, Rahul reaches the finishing line 5 seconds before than Raj and beats Raj by 50 metre. What is Rahul's speed (in m/s)? 9

The minimum value of 3(6 + x)(x + 12) / [2(4 + x)], where x > −4, is

In triangle PQR, PS is perpendicular to QR and S divides QR in the ratio of 3 : 1 internally. If PQ = 21 and PR = 9, find QR.