Question

Vinh needs 420 points to have a B average in Math. His scores so far are 88, 89, 79, and 77. What is the minimum score he can make on the next test to maintain the B?

Answer 1

Do you know how to take out averages?

Answer 2

yes

Answer 3

Then what exctly is your doubt here?

Answer 4

ill do it myself then

Answer 5

Here, Sum of scores so far + unknown score/5 is greater than or equal to 420 ..

Answer 6

thank you(: