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17 September, 00:29

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

you earn on your next test?

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  1. 17 September, 01:31
    0
    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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