If 30% of Aman's income is added to 40% of Raman's income, the answer is 80% of Raman's income. What percentage of Aman's income is Raman's income?

A number if required by 25% becomes 225. By what percent should be increased so that it becomes 375?

Which of the following statements is /are True?
I. $$ {33^3}>{3^{33}}$$
II. $$ {333}>{(3^{3})^{3}}$$

The respective ratio between the present ages of Rani and Moni is 6 : 7. If Moni is 4 years older than Rani, then what will be the respective ratio of the ages of Rani and Moni after 4 years? 

Three pipes A , B and C takes 15, 24 and 36 minutes respectively to fill a tank. Pipe D can empty it in 1 hour. If all the four pipes are kept open then find the time taken to fill the tank. 

While selling an article for Rs 18450, a person suffered a loss of 50%. At what price he should have sold the article (in Rs) to earn a profit of 50%?

Direction : What value should come in the place of question mark (?) in the following questions?

3.6 + 36.6 +3.66+0.36+3.0=?

D, E, F are the mid - points of the sides BC, CA and AB respectively of a ΔABC. Then the ratio of the areas of DEF and ΔABC is D, E, F.