Exams

P and Q can do a work in 4 hours and 12 hours respectively. P starts the work at 9am and they work alternately for one hour each. When will the work be completed ?

The ratio of Karthik’s and Kalyan’s ages is 4: 5. If the difference between the present age of Kalyan and the age of Karthik 5 years hence is 3 years, then what is the total of present ages of Karthik and Kalyan?

An object at rest may have

If x = 0.139, then what is the value of  4x2 + 4x + 1 ?

Ramu rides his bike at an average speed of 45 km/hr and reaches his desitination in four hours. Somu covers the same distance in six hours. If Ramu covered his journey at an average speed which was 9 km/hr less and Somu covered his journey at an average speed which was 10 km/hr more, then the difference in their times taken to reach the destination would be (in minutes).

Rearrange the parts of the sentence in correct order.

P: In the least-developed countries, if agricultural productivity were drastically reduced by climate change, the cost of living would rise by one or two percent, and at a time when per capita income will likely have doubled.
Q: It may still be vulnerable to climate change for many years to come.
R: In developing countries, in contrast, as much as a third of GNP and half the population currently depends on agriculture.
S: Agriculture is practically the only sector of the economy affected by climate.

Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K? 

Select the synonym of

preacher