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.
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