document.write( "Question 897911: One week, a shops sold 42 boxes of stationary, some at $5 a box and some at $7 a box. The total value of the stationary sold was $246. How many boxes were sold at each price? \n" ); document.write( "

Algebra.Com's Answer #544431 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Let x represent number of $7 boxes   \r
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document.write( "7x +5(42-x) = 246
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document.write( "  2x = 36
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document.write( "   x = 18 $7 boxes  and 24 $5 boxes  (42-18 = 24)
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