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You have taken four test and earned a 60, 95, 80, and 75. you want to keep your overall average at 80. Write and solve the equation you would use to find what you need to score on your fifth test to keep this average.

Respuesta :

nurulfatehah010

Answer:

5th test = 90

Step-by-step explanation:

Overall average= 80

80 = (60 + 95 +80 + 75 + a) / 5

400 = 310 + a

a = 400 - 310

a = 90 ( score for 5th test)

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