SOLUTION: 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?

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?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

 

Hi

Let x represent number of $7 boxes   



7x +5(42-x) = 246

  2x = 36

   x = 18 $7 boxes  and 24 $5 boxes  (42-18 = 24)

 

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