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Todd has earned the following test scores in his chemistry class so far: 76, 83, 89, 95, 100. There is one last test this semester that will count toward his grade. What grade must Todd make on the sixth test to have a test average of 90 or better?

Sagot :

Ridmitharukaidn

Answer:

97

Step-by-step explanation:

76+83+89+95+100=443

there are all 6 tests.

we consider marks of last lest as "X"

x should be added to total mark

to obtain average mark, total marks should divided by no. of tests.

(443+x)/6=90

443+x=90*6

443+x=540

x=540-443

x=97
Hope my answer helped u :)
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