Question

Select the correct answer. Cole’s age is 3 years less than his sister Tina’s age, t. If Cole is 18, which equation represents this situation, and how old is Tina? A. The equation that represents this situation is t − 3 = 18. Tina is 21. B. The equation that represents this situation is t + 3 = 18. Tina is 15. C. The equation that represents this situation is 3 − t = 18. Tina is 21. D. The equation that represents this situation is -3 − t = 18. Tina is 15.

Answer 1

Explanation:

A. t-3=18. Tina is 21. Here's your answer.

Answer 2

The correct option is A

The equation that represents this situation is
`t-3=18`. Tina is
`21`.

The explanation for the correct option:

Option A:

• It is given in the question, Tina's age is
  `t`.

• Cole's age is
  `3` year less than Tina's age, that is
  `t-3`.

• It is given that Cole's age is given to be
  `18`.

From the given question:

`t-3=18`

Adding
`3` both sides in order to solve for
`t`:

`t=18+3`

`=21 \ years`

Therefore, the equation to find the age of Tina is
`t-3=18` and the age of Tina is
`21` years.

Hence, Option (A) is the correct option.