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zimovet [89]
4 years ago
5

Your test grades are 70. 85. 95. 93 and 94. You have one more test and want an average of an 86. What must

Mathematics
1 answer:
insens350 [35]4 years ago
7 0

Answer:

79

Step-by-step explanation:

Let last test score be y

Average = sum of test scores/ number of test scores.

Average was given in question = 86

86= 70+85+95+93+94+y/6

86= 437+y/6

Cross multiply

86*6 =437+y

516= 437+y

Collect like terms

516-437=y

Y=79

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