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posted by vicky

In a first semester unit there are four tests each of equal weight i.e. each worth 25%. Your average on the first three tests has been 62%. You need to get an overall average of 65% to proceed to the second semester.
What percentage should you try to get on the fourth test?
Please show your work.

  1. Reiny

    looks rather straightforward ...

    (62+62+62+x)/4 = 65
    186+x = 260
    x = 74

  2. vicky

    Thanks Reiny

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