rfieldgrove7038 rfieldgrove7038

02-06-2018
Mathematics

contestada

Paul has grades of 86 and 85 on his first two tests. what must he score on his third test in order to have an average of at least 90

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a3541649783 a3541649783

02-06-2018

you can think the third score is x
86+85+x=90*3
x=99

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cchikoo cchikoo

02-06-2018

3*90=270 ( multiply the number of tests which is 3, times 90 to get the total score)

86+85=171 (adding two test together)
270-171= 99

You will need at least 99 in your third test!

Hope this helps!

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