Question

Stacy is 3 years younger than twice her sister’s age. Which equation can be used to determine her sister’s age if Stacy is 13 years old? A. 2x – 3 = 13 B. 3 – 2x = 13 C. 2(x – 3) = 13 D. 2(3 – x) = 13

Answer 1

Option A is the correct answer.

Step by step explanation :

It's given that Stacy is 3 years younger than twice her sister's age.

Let's consider her sister's age to be 'x'

So Stacy's age = 2x - 3

Since Stacy's age is 13, we get

13 = 2x - 3

Or 2x - 3 = 13