suppose the younger is age N. The older must be N+2 because they were born in consecutive even years.
N(N+2) = 224
N^2 + 2n = 224
(N+1)^2 = 225
N+1 = 15
so their ages are 14 and 16
2007-03-08 07:36:03
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answer #1
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answered by hustolemyname 6
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Let x = age of one child.
Since the age of the children are given to be consecutive, it follows that the age of the other child is (x + 1)
It is given that the product of their ages is 224, so we take the product of x and (x + 1) and equate it to 224.
x(x + 2) = 224
Now, expand the left hand side.
x^2 + 2x = 224
Move the 224 to the left hand side.
x^2 + 2x - 224 = 0
And factor.
(x + 16)(x - 14) = 0
x = {-16, 14}
This means the age of the one child is either -16 or 14. But a negative age is not possible, which means x = 14.
Given x = 14, since we know the age of the other child is
x + 2, or 16.
So the ages of the children are 14 and 16.
2007-03-08 16:09:52
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answer #2
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answered by Puggy 7
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First set the age of child A to be x years old. Child B will then be (x+2) years old.
Set up an equation so that (x)(x+2)=224
If you multiply this out, you get x^2 +2x=224
subtract 224 from both sides to get the quadratic equation: x^2+2x-224=0.
If you solve this quadratic, you get that x= 14, and x=-16. Obviously, a person cannot have a negative age, so child A is 14 years old. Child B's age is 2 more than that, so child B is 16.
2007-03-08 15:38:18
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answer #3
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answered by crimson110 1
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x = age of 2nd Sorenson child
x + 2 = age of 1st Sorenson child
x(x + 2)=224 ---> x^2 + 2x -224= 0
(x + 16) (x - 14) = 0 since x cannot be negative, x = 14
x + 2 = 16
The children are 16 and 14.
2007-03-08 15:52:35
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answer #4
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answered by Freddy M 1
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They are 14 and 16
2007-03-08 15:39:31
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answer #5
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answered by Ryan O 2
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14 x 16 = 224 - consecutive EVEN years.
2007-03-08 15:39:03
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answer #6
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answered by Kenny 3
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Mental math: Factor 224 into two integers such that the difference of the two is 2.
224 = 14*16
Therefore, one child is 14 years old and the other is 16 years old.
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Standard way:
xy = 224......(1)
x-y = 2......(2)
Combine,
x - 224/x = 2
x^2-2x-224 = 0
(x-14)(x+16) = 0
Therefore,
x = 14
y = 16
2007-03-08 15:36:16
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answer #7
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answered by sahsjing 7
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14 and 16
14*16 = 224
2007-03-08 15:36:04
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answer #8
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answered by Bryan M 2
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x(x+2) = 224
x^2 + 2x = 224
x^2 + 2x - 224 = 0
(x - 14)(x + 16) = 0
so x = 14 and - 16
negitive age doesn't make sense...so x = 14
So the ages are x and x + 2
or 14 and 16
2007-03-08 15:38:23
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answer #9
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answered by theFo0t 3
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one will 14 and the other 16.
2007-03-08 15:39:31
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answer #10
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answered by master t 1
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