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18-01-2018
Mathematics

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Toby wants to increase his test score average by 10% write an expression that he can use to determine his new grade will be

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dwh2o13 dwh2o13

18-01-2018

let x = Toby's current test average.

Then: x + .10x would get you to an average that is is 10% greater.

Example: Lets say your current test score average is 80. 10% of 80 is 8. So 88 represents a 10% increase compared to 80.

Or, think of what 110% of 80 would be: 1.1(80) = 88

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