Rajesh purchased two different kinds of alcohol. In the first mixture, the ratio of alcohol to water is 4 : 5 and in second mixture it is 6 : 7. If he mixes the two given mixtures and makes a third mixture of 22 litres in which the ratio of alcohol to water is 5 : 6, the quantity of first mixture that is required to make 22 litres of the third kind of mixture is.

The marked price of one pen is '₹x'. The selling price of one packet of 'x' pens, after a discount of 15%, ₹1360. What is the value of 'x'?

The sides of a triangle are in the ratio 3 : 4 : 5. The measure of the largest angle of the triangle is

If α, β are the roots of 6x²+13x+7=0, then the equation whose roots are α², β² is:

A chord of length 16 cm is drawn in a circle of radius 10 cm. The distance of the chord from the centre of the circle is

The cost price of 27 articles is the same as the selling price of 18 articles. What is the gain percentage?

Directions : Given here is a pie chart showing the cost of gold in 2010, 2011, 2012 and 2013. Study the chart and answer the following questions

If the price of gold in 2013 is Rs. 31,500 per 10 gram, then the price of gold in 2011 per 10 gram is

Total cost of A pens and (A-2) pencils is Rs 424. If one pencil and one pen costs Rs 4 and Rs 20 respectively then find A?