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It costs 45 dollars for 2 calculators, 143 for 4 calculators and 869 for 10 calculators, how much are 7

It costs 45 dollars for 2 calculators, 143 for 4 calculators and 869 for 10 calculators, how much are 7
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it costs 45 dollars for 2 calculators, 143 for 4 calculators and 869 for 10 calculators, how much are 7

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User Arvid Heise
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290$ for 7 of the calculators
it costs 45 dollars for 2 calculators, 143 for 4 calculators and 869 for 10 calculators-example-1
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User Mathiasbn
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