Tom is 7 years older than Sam, and Jack is thrice as old as Tom. If S is Sam’s age and J is Jack’s age, what is the relationship between S and J? Choices:
A) J = 3S + 10  B) J = 3S + 21  C) J = 3S + 5  D) J = 3S − 11  E) J = 3S − 4
T=S+7 and J=3T --&gt; J=3S+21   Answer J = 3S + 21
<result>B</result>
Tom is 7 years older than Sam, and Jack is thrice as old as Tom. If S is Sam’s age and J is Jack’s age, what is the relationship between S and J?