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Larry buys 4 whatits and 15 henways for $119. Joe buys 12 whatits and 7 henways for $167. How much does a henway cost and how much does a whatits cost? ( I need the equation too)

Sagot :

Mhanifaidn

Answer:

  • Henways - $11, whatits - $5

Step-by-step explanation:

Required equations are:

  • 4w + 15h = 119
  • 12w + 7h = 167

Solve by elimination, 3 times the first equation minus the second equation:

  • 3(4w + 15h) - (12w + 7h) = 3*119 - 167
  • 12w + 45h - 12w - 7h = 190
  • 38h = 190
  • h = 190/38
  • h = 5

Find w:

  • 4w + 15*5 = 119
  • 4w = 119 - 75
  • 4w = 44
  • w = 11
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