The difference between two whole numbers is 110 and the numbers are in ratio 2 : 7. Find the sum of the two numbers.

Direction: Equation number I and II are given. You have to solve both the question and answer.
$$ {I.x^{2}={144}}$$
$$ {II.y^{2}-24y+144=0}$$

The speed of a  boat in still water is 20 kmph and the rate of current is 4 kmph. The distance travelled by the boat downstream in 30 minute is

Aman and Ajay can build a wall in 9 days and 12 days respectively. In how many days can they finish the work if they work together?

A man can row downstream at a speed of 15 km/h and upstream at 11 km/h. Find his speed in still water and the speed of the current, respectively. [Give both your answers in km/h]

What is the average of the first five prime numbers?

If $$64^{x+1}={64\over 4^x}$$, then the value of x

Three partners started business by investing Rs.60,000, Rs.80,000 and Rs.1,20,000 respectively. First partner left the business after 4 months, second after 9 months and third rem ained in the business for the whole year. At the end of year the total profit earned is Rs. 1,60,480, then find their shares of profit.