Direction: Study the following table carefully and answer the given questions. Table shows the of passed students in four schools and ratio between passed boys and girls among them. The ratio between failed boys and girls is reverse of passed ratio between them.

Find the ratio between the number of boys passed from School P and School Q. 

A train running at the speed of $${140\over 9} $$  m/sec, crosses a pole in 27 sec. Find the length of the train.

A regular hexagon has a side of 4 cm. Find its area. (in sq. cm)

Directions: The bar chart given below shows the percentage distribution of the production of various models of a mobile manufacturing company in 2007 and 2008. The total production in 2007 was 35 lakh mobile phones and in 2008 the production was 44 lakh. Study the chart and answer the following questions.
Percentage of six different types of mobiles manufactured by a company over two year

If 85% of the D type mobile produce in each year were sold by the company, how many D type mobiles remained unsold?

If x - y = 6 and xy = 40, then  find $$ {x^2+y^2}$$

A sum of Rs.13,000 is to be paid back in 2 equal annual instalments. How much is each instalment if the interest is compounded annually at 8 % per annum?

A can finish work in 18 days and B in 36 days. If they work on it together for 9 days, what percent of work is left?

What is the 15 % of 34?