ICSE − Q & A

By purchasing rs.50 shares of the company for rs. 75 each. Sonal gets 8 percent​ per annum on her investment.
What rate percent is company paying???

Guys, whats your compulsory attendence percentage in class 11 and 12? In my school its 95% :(

www.respaper.com/anurag2001/9939-pdf.html I did question 2(b) with similarity and got the answer. Is that the right way?

http://www.respaper.com/anurag45/8953-pdf.html?ln=13&ov=1 Question no 9.. (C)..
How to do. Pls answer !!!!

http://www.respaper.com/surya30/6601-pdf.html question 1 b
the answer is 1:4     -   do we have to use this to prove it - i have first proved that triangleDBE is similar to triangle ABC
so by that AC= 2DE
and then similarly 
AB=2EF
BC=2DF
then by that triangle DEF is proved similar to triangle ABC
and hence the ratio
is this method correct ?

Can anyone derive the formula for recurring deposit?
What is the formula for quarterly compounded R.D.?

Can anyone explain the time and work questions in quadratic equations

http://www.respaper.com/surya30/6601-pdf.html Q 4(b) i tried many times but i got only decimal answer pls help me out

If the rate of sales tax is 5%,Simran has to pay Rs. 7140 for the steel cupboard.What amount she has to  pay if the sales tax is increased by 2%?Plz reply ASAP....
Is the answer Rs.7276?
Do we get the final sales tax by adding 5% and 2%?

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