Ariel has 19 more CDs than her sister Tiffany has. victor has 3 times as many CDs as Ariel has. Which expression can be used to show how many CDs the three have in total?

1 Answer
Olivier B.
Feb 17, 2017

The total number of CDs can be found with the expression Sigma=5T+76

Explanation:

Be T the number of CDs owned by Tiffany.
Be A the number of CDs owned by Ariel.
Be V the number of CDs owned by Victor.

A=T+19
V=3cdotA

Therefore, the total number of CDs owned by Ariel, Tiffany and Victor is:

Sigma=A+V+T=A+3cdotA+T=(T+19)+3cdot(T+19)+T
Sigma=5cdotT+76

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