ICSE − Q & A

Do we have to round up when the question is asked to upto 2 decimal places?

http://www.respaper.com/anurag45/8953-pdf.html?ln=13&ov=1 Question 7:A..
With steps pls...

A boy is x years old and his mother is x^2 years old. When the lady becomes 11x years old, the boy becomes x^2 years old. Find their present ages. 
Please somebody solve this question.

suppose im given coordinates of points P and Q and i'm asking to find the equation. after finding its slope, i can take either point for finding equation right?

http://www.respaper.com/surya30/6601-pdf.html can anyone pls show me the working of  Q3a and Q3c

is there any difference between cbse and isc syllabus

i am having a confusion with the 'proceeds'. When a person sells his shares and invests the proceeds in another shares, should we include the dividend from the former shares in his second investment.

How do you draw hexagon 
@taking 120 degrees
@fast drawing the circle then inscribe the hexagon @taking the equilateral triangle of the side of the hexagon 
### which one is more appropriate for ICSE

Can anyone plz post the links of all the sdfg's papers??I am getting only three of them....plz post them ASAP!!!

Is catalytic converter a modification of engine design? Or is it only four stroke engines?