postman sold some 15 cent stamps and some 25 cent stamps. 10 stamps total were sold for $1.70. How many of each were sold?

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postman sold some 15 cent stamps and some 25 cent stamps. 10 stamps total were sold for $1.70. How many of each were sold?

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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Let x = the number of 15 cent stamps sold then 10 - x = number of 25 cent stamp sold The total sold came to $1.70 15x + 25(10-x)=1.70 15x+250-25x=1.70 -10x=170-250-30 -10x=-80 x=8 15 cent stamps 10-8=2 25 cent stamps. $1.20 + .50 =$1.70
typo * -10x=170-250=80

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