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Mathematics 13 Online
OpenStudy (katherinkoon):

Which calculations could be used to solve this problem? There are 21 children at Corie's party. There are 2 times as many girls as boys at the party. How many girls are at the party? Choose all answers that are correct. A. Multiply 21 × 2. Divide the product by 3. B. Add 21 + 2. Divide the sum by 3. C. Divide 21 ÷ 3. Subtract the quotient from 21. D. Divide 21 ÷ 3. Multiply the quotient by 2.

OpenStudy (dmezzullo):

You start off with 21. Then you can divide by 3.

OpenStudy (katherinkoon):

so is it c and d

OpenStudy (dmezzullo):

You get 7. Then multiply that by 2 and you get 14. So there's 14 girls and 7 boys. Because 14+7=21.

OpenStudy (dmezzullo):

Yes both C and D.

OpenStudy (katherinkoon):

thanks here's your medal

OpenStudy (dmezzullo):

Are you understanding these?

OpenStudy (katherinkoon):

yes but i might need a little help

OpenStudy (dmezzullo):

With what?

OpenStudy (katherinkoon):

with more questions

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