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Yuri [45]
3 years ago
5

The Lee’s have three children. The oldest is twice as old as the youngest. The middle child is five years older than the younges

t. If the sum of the ages is 57, how old is each child?
Mathematics
2 answers:
makkiz [27]3 years ago
8 0
The answer is 13, 18, and 26.
WITCHER [35]3 years ago
5 0
The three children are x, 2x, and x+5
So set up an equation: x+2x+x+5=57
Solve: 4x=52 so x=13
So the ages are...

13, 18, 26

Check: 13+18+26=57
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Method\ 1:

\dfrac{1}{3}=\dfrac{1\cdot5}{3\cdot5}=\dfrac{5}{15}\\\\\dfrac{3}{5}=\dfrac{3\cdot3}{5\cdot3}=\dfrac{9}{15}\\\\\dfrac{3}{15} < \dfrac{9}{15}\ therefore\ \dfrac{3}{5}\ is\ bigger


Method\ 2:

\dfrac{1}{3} < \dfrac{1}{2}=\dfrac{1.5}{3}\\\\\dfrac{3}{5} > \dfrac{1}{2}=\dfrac{2.5}{5}\\\\therefore\ \dfrac{3}{5}\ is\ bigger

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Step-by-step explanation:

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