English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

one number is twice another. When the larger number is decreased by 10 the result is 2 greater than the smaller number. What are the numbers. ^_^ help please...

2006-11-27 22:55:18 · 8 answers · asked by Anonymous in Science & Mathematics Mathematics

2x 1st number/ larger number
2x-10= [2 numbers higher than the value of the smaller number]

2006-11-27 23:04:39 · update #1

8 answers

Let x = "one number".
Then, the "another number" is 2x.

When the larger number is decreased by 10,

2x - 10

The result is 2 greater than the smaller number

x + 2

Therefore,

2x - 10 = x + 2, and
x = 12.

So the two numbers are x and 2x, or 12 and 24.

Let's put it back into the problem.

One number is twice another. 24 is twice 12.
When the larger number is decreased by 10 (24 - 10 = 14), the result is 2 greater than the smaller number (2+12 = 14). Therefore that's the answer!

Happy solving!

2006-11-27 23:00:52 · answer #1 · answered by Welgar 2 · 0 0

The numbers are 24 and 12.

Solution: (let one number be x and the other y.
x = 2y (one number is twice another)
x - 10 = y + 2 ( the larger number is decreased by 10
is 2 greater that the smaller number, so add two)
subtract both sides gives

x - (x-10) = 2y - (y+2)
x - x +10 = 2y - y - 2
10 = y -2
12 = y

then x = 2y = 2*12
x = 24

2006-11-27 23:05:47 · answer #2 · answered by Christian 1 · 1 0

Let two numbers be a and b
By your observations
a = 2b and a - 10 = b + 2 [thus a is larger number]
Substituting a = 2b in a - 10 = b + 2, we get
2b - 10 = b + 2
=>2b - b = 2 + 10
=>b = 12
And a=2b => a = 2*12 = 24
Thus, two numbers are a=24 and b=12.

All the bset

2006-11-27 23:21:17 · answer #3 · answered by Paritosh Vasava 3 · 0 0

Let the numbers be 'x' and '2x'
2x - 10 = x + 2
2x = x + 2 + 10
2x = x + 12
2x - x = 12
x = 12
2x = 2*12 = 24

The numbers are 12 and 24.

2006-11-27 23:25:24 · answer #4 · answered by Akilesh - Internet Undertaker 7 · 0 0

10 to the second power or divide the 2 and the 10.

2006-11-27 22:56:42 · answer #5 · answered by D H 1 · 0 1

first num is x
the 2nd num is y

x=2y.......1
x must be bigger than y (look at the equation), so..
x-10=2+y.....2

substitute 1 -> 2
2y-10=2+y
2y-y=2+10
y=12
x=24

the nums are 24 and 12

2006-11-27 23:37:36 · answer #6 · answered by fii 3 · 0 0

12 and 24

6:12
6: 2
12:24
12:14

2006-11-27 23:05:54 · answer #7 · answered by AndyPandy 3 · 0 0

x = 12
y = 24

2006-11-27 23:01:49 · answer #8 · answered by patrioticjock 3 · 1 0

fedest.com, questions and answers