Dylan has 200 marbles. If Dylan has 10 times as many marbles as Robert, write an equation that shows how many marbles Robert has
. Use r to represent the number of marbles of Robert has.
2 answers:
200/10 = R
If you use division to solve this problem you will come out with 20 marbles. TO check you multiply 20 and 10.
200x10=r r=2000. So Robert has 2,000 marbles
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0.03x+0.06 (6500-x)=225
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0.03x-0.06x=225-390
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X=165÷0.03
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6500-5500=1000 invested at 6%
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