PDA

View Full Version : Word problems quadratic equations


Zehri
Mar 16, 2010, 12:59 AM
A numerator of a fraction is 2 less than its denominator. When both numerator and denominator are increased by 3 the fraction is increased by 3/20. Find the original fraction?

Zehri
Mar 16, 2010, 01:00 AM
A numerator of a fraction is 2 less than its denominator. When both numerator and denominator are increased by 3 the fraction is increased by 3/20. Find the original fraction?

Unknown008
Mar 16, 2010, 04:37 AM
You are looking for a fraction. That means it is in the form \frac{a}{b}

You are told that a here is less than b by 2.
Also, you are told that if a and b are increased by 3, that means they each become (a+3) and (b+3) respectively, it is in fact increased by 3/20.

From the first part, you have a + 2 = b.

From the second part, you have

\frac{a+3}{b+3} = \frac{a}{b} + \frac{3}{20}

Can you solve the problem now?

Hussi_16
May 1, 2011, 01:00 AM
Can u solve it more further please
'

Unknown008
May 1, 2011, 03:04 AM
Show first how you would do to solve that. It doesn't matter if it's wrong or not. The important thing is that you try.

Hussi_16
May 1, 2011, 08:50 AM
Its answer is coming 8 and 5 but the real answer is 3/5 plzz solve it

Unknown008
May 1, 2011, 09:56 AM
The word 'show' implies that you give the steps that you followed. When you show these, we'll see where you are making the mistake and give the appropriate help.

zubairaaamir
Nov 24, 2013, 02:47 AM
4/9