Posted by **Lisa** on Monday, November 12, 2012 at 9:15pm.

Ricky wrote the following to show that his sister's age is 6 yrs. less than 3 times his age. Explain what he did wrong.

Give the correct expression Let a stand for my age My sister's age a/3-6

- Math -
**Reiny**, Tuesday, November 13, 2012 at 12:01am
ricky's age

sister's age:

6 less than 3 times rick's age ----> 3a - 6

I would never ask for an "explanation" of somebody's illogical thinking

- Math -
**Anonymous**, Monday, March 21, 2016 at 5:42pm
Richard is 6 years older than Lisa, and in 5 years the sum of their ages will be twice as much as the sum of their ages 4 years ago. Find their present ages.

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