What is the value of [ 7÷ 14 x 8 + (5 ÷ 15 x 6 - 4 × 3)]?

If x + y + 3 = 0 , then find the value of x³+y³-9xy+9.

if 20% of A = 50% of B, then what percentage of A is B?

Directions : Study the following pie chart carefully and answer the questions. The pie chart represents the percentage of people involved in various occupations.
Total number of people = 20000

The sectoral angle made by the people involved in service in the given pie-chart is

If 4sin²θ=3(1+cosθ),0⁰<θ<90⁰, then what is the value of (2tanθ+4sinθ-secθ)?

The price of petrol is increased by 25%. By how much percent a car owner should reduce his consumption of petrol so that the expenditure on petrol would not be increased?

The area of two equilateral triangles are in the ratio 25 : 36. Their altitudes will be in the ratio : 

The Government reduced the price of sugar by 10 per cent. By this a consumer can buy 6.2 kg more sugar for ₹ 837. The reduced price per kg of sugar is: