The angle of elevation of sun changes from 30 ° to 45 °, the length of the shadow of a pole decreases by 4 meters, the height of the pole is (Assume √3 = 1.732) 

The angles of elevation of the top of a temple, from the foot and the top of a building 48 m high, are 60^o and 30^o respectively. The height of the temple is more than the building. The height of the temple is-

A and B together can do a piece of work in 12 days which B and C together can do in 16 days. After A has been working at it for 5 days and B for 19 days, C finishes it in 7 days. In how many days B could finish the whole work? 

If 0.5x + 0.7y=0.5 and 0.7x + 0.5y=0.7,then the value of x+y is

A person swims a distance of 28 km. in the direction of stream in 5 hours and a distance of 13 km. in 5 hours against the stream. What is the velocity of the stream?

The bar graph given below shows the production of sugar (in lakh tonnes) by two different companies P and Q for the given years.

J1 = percentage increase in production of sugar of company P from 1991 to 1995.

J2 = percentage increase in production of sugar of company Q from 1992 to 1994.

What is the value of J1 + J2?

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be 

Study the following information carefully to answer the questions.
The teachers' colony has 2800 members, out of which 650 members read only English newspaper. 550 members read only Hindi newspaper and 450 members read only Marathi newspaper. The number of members reading all the 3 newspapers is 100. Members reading Hindi as well as English newspapers are 200. 400 members read Hindi as well as Marathi newspaper and 300 members read English as well as Marathi newspaper.

Find the number of members reading the no newspaper.