△ABC ∼ △DEF. If the areas of △ABC and △DEF are 100 cm² and 81 cm², respectively and the altitude of △DEF is 6.3 cm, then the corresponding altitude of △ABC is:

if 2x² – 7x + 5 =0, then what is the value of

Directions : The following graph shows production (in thousands) of two types (P and Q) of vehicles by a factory over the years 2009 to 2014. Study the graph and answer the given questions. 

In how many of the given years, was the production of Type P vehicles of the company more than the average production of this type vehicles in the given years?  

The ratio of the first and second class train fares between two stations is 3: 1 and that of the numbers of passengers travelling between the two stations by first and second classes is 1: 50. If on a particular day. 1,325 are collected from passengers travelling between the two stations. Then the amount collected from the second class passengers is

Atm of ₹2.400. amounts to ₹3,264 in 4 years at a certain rate of simple interest. If the rate of interest is increased by 1% the same sum in the same time would amount to-

Directions : The Bar Graph given here shows the population (in crores) of India in various census years. Observe the graph and answer the question based on it.

The per cent increase in population from 1971 to 1981 is

The speed of a train is 108 km/h. The distance covered by the train in 11 seconds will be:

Find the area of the triangle whose sides are 5 cm, 12 cm and 13 cm.