Sylvia L.

asked • 05/24/17

How old am I if 400 reduced by 2 times my age is 244

 help me to solve this problem step by step.

1 Expert Answer

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Andrew R. answered • 05/24/17

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High School Science Educator with Masters Degree from Univ of Illinois
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You would use the following equation here. Your age would be represented by the letter "a"
 
400-2a=244
 
Subtract 400 from both sides
 
-2a=-145
 
divide both sides by -2
 
a=78 years old
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Andrew R.

tutor
To clarify, in the initial equation, you would use "2a" because you are reducing 400 by 2times what your age would be.
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05/24/17

Andrew R.

tutor
Also, remember that the word "is" means equals.
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05/24/17

Benjamin G.

the sum of 244-400 would be -156 not -145 that would get you -72.5 once you divide -145 by -2 -9th grader
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12/08/20

Andrew R.

tutor
You're right. Typo on my part. Good catch!
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12/08/20

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