SOLUTION: office supply store, ken bought p boxes of paper clips priced at $0.55 each and n notebook priced at $0.85 each. he bought a total of 10 items and paid $6.70 in all. solving which

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Question 1060573: office supply store, ken bought p boxes of paper clips priced at $0.55 each and n notebook priced at $0.85 each. he bought a total of 10 items and paid $6.70 in all. solving which of the following equations would give the correct values of p and n ?
Answer by josmiceli(19441) About Me  (Show Source):
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(1) +p+%2B+n+=+10+
(2) +.55p+%2B+.85n+=+6.7+
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(2) +55p+%2B+85n+=+670+
(2) +11p+%2B+17n+=+134+
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Multiply both sides of (1) by +11+
and subtract (1) from (2)
(2) +11p+%2B+17n+=+134+
(1) +-11p+-+11n+=+-110+
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+6n+=+24+
+n+=+4+
and
(1) +p+%2B+n+=+10+
(1) +p+=+6+