# Sue is 7 years older than Bob. Three less than twice Bob's is Sue age, find bob and Sue's ages now?

##### 2 Answers

Sep 21, 2017

Bob is

#### Explanation:

Let Sue

Since

Do some algebra to figure out that

Since Sue is

Sep 21, 2017

Bob is 10 Sue is 17

#### Explanation:

Let s = Sue's age

Let b = Bob's age

Sue is 7 years older than Bob so Sue is:

Three less than twice Bob's age:

You need to solve these simultaneously.

Substitute for

Add 3 to both sides:

Subtract b from both sides:

Substitute 10 for b in equation [ 1 ]