Question 1147889: The combined age of two brothers is 35 years. Seven years ago, one brother was twice the age of the other. How many years apart were they born? Need help with the equation also using let statements, Thanks.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source):
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website! The combined age of two brothers is 35 years. Seven years ago, one brother was twice the age of the other. How many years apart were they born? Need help with the equation also using let statements, Thanks.
You need to IGNORE everything, and I mean, EVERYTHING the other person wrote. 90% of it MAKES absolutely no sense.
Younger is most definitely not 21, and the age difference makes no sense at 21 either. By the way, doesn't that make the sum of the ages 42? Is that hard for the dude to see? I guess so!!!
This guy needs to be BANNED. Students are complaining and he just keeps on providing these RIDICULOUS answers, and continues to lead them ASTRAY!
***WARNING: KEEP AWAY from this person!!
Let the elder brother's age be E
Then the younger's is: 35 - E
We then get: E - 7 = 2(35 - E - 7)
Solve this for E, the elder brother's age, and then find 35 - E, the younger brother's age.
Then just SUBTRACT the younger's from the elder's!
Correct answer:  .
|
|
|
