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Jane has to pass ten exams in a year. So far, she has made six and has an average of 2.5. What average must she reach from the remaining tests for her overall average for the year to be 2?

Correct answer:

x =  1.25

Step-by-step explanation:

$$\begin{gathered} (6\cdot 2.5+(10-6)\cdot x)/10=2 \\ 4x=5 \\ x=\frac{5}{4}=1.25 \\ x=\frac{5}{4}=1.25 \end{gathered}$$

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