Question

Priya has completed 9 exam questions. This is 60% of the questions on the exam. Use x as your variable. Write an equation representing this situation.  ____ What does your variable mean in terms of this situation in the equation you wrote?  ____ How many questions are on the exam? _____  

Answer 1

Let x be the total number of questions.

Since we know that 60% is equal to 9 questions of the exam we have the equation:

$0.6x=9$

where, as we stated above, x represents the total number of questions.

Solving for x we have:

$\begin{gathered} \text{0}.6x=9 \\ x=\frac{9}{0.6} \\ x=15 \end{gathered}$

therefore the exam has 15 questions.