Answer:
In the next test John must get \(79\)
Step-by-step explanation:
Let
x------> the score in the next test
we know that
The formula to calculate the mean is the sum of the scores divided by the number of test
so
\(76=\frac{75+82+66+78+x}{5}\)
Solve for x
\(76=\frac{301+x}{5}\\ \\x=76*5-301\\ \\x=79\)
