SOLUTION: An office supply store in new york sells 7 tablets and 4 pens for $6.40. Also , two tablets and 19 pens cost $5.40. Find the price of each
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Question 826447: An office supply store in new york sells 7 tablets and 4 pens for $6.40. Also , two tablets and 19 pens cost $5.40. Find the price of each
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the cost for 1 tablet in cents
Let = the cost of 1 pen in cents
------------
(1)
(2) ( in cents )
-------------------
Multiply both sides of (1) by
Multiply both sides of (2) by
Subtract (1) from (2)
------------------
(2)
(1)
and, since
(1)
(1)
(1)
(1)
---------------
The price of a tablet is 80 cents
The price of a pen is 20 cents
--------------------------
check:
(2)
(2)
(2)
OK
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