Simple Arithmatic | 8 Dec, 2009
|
Pro contributor
|
|
| 7Dec2009,19:50 | #1 |
|
Two Numbers Are Such That Their Difference, The Sum And The Product Are In The Ratio 1:7:36. Find The Numbers And Explain!
|
|
Go4Expert Founder
|
 |
| 8Dec2009,18:53 | #2 |
|
Approved.
|
|
Ambitious contributor
|
 |
| 8Dec2009,19:48 | #3 |
|
x = 12
y = 9 x-y = 3 x+y = 21 xy = 108 so x-y:x+y:xy => 1:7:36 |
|
Ambitious contributor
|
|
| 8Dec2009,19:54 | #4 |
|
|
From the question we can say,
x-y x+y xy --- = ---- = ---- = r 1 7 36 From this we get three equations, x - y = r x + y = 7r xy = 36r By solving these equations, we get the value of r=3, x=12, and y=9.
nimesh
like this
|
|
Ambitious contributor
|
|
| 8Dec2009,19:56 | #5 |
|
|
In the previous post, the first equation should be like this:
[(x-y)/1] = [(x+y)/7] = [(xy)/36] = r It didn't display correctly, so I am reposting that equation here. |
|
Pro contributor
|
|
| 8Dec2009,21:33 | #6 |
|
|
Hi Venami...
You are absolutely correct! Congrats... 
|
|
Skilled contributor
|
|
| 8Dec2009,22:12 | #7 |
|
hehehe..gud maths....congrs
|
|
Ambitious contributor
|
|
| 8Dec2009,22:16 | #8 |
|
|
Thanks
|
|
Pro contributor
|
|
| 8Dec2009,22:20 | #9 |
|
|
Quote:
Originally Posted by venami 
|
|
Invasive contributor
|
|
| 9Dec2009,21:46 | #10 |
|
Congrats Venami. Nice calculation
|