question: In a grocery store, four apples cost $5.20, and three oranges cost $3.30. How much will Clyde pay for 5 apples and 5 oranges?
answer: Each apple costs $5.20/4 = $<<5.20/4=1.30>>1.30.
  Each orange cost $3.30/3 = $<<3.30/3=1.10>>1.10.
  So 5 apples cost $1.30 x 5 = $<<5*1.30=6.50>>6.50.
  And 5 oranges cost $1.10 x 5 = $<<5*1.1=5.50>>5.50.
  Thus, Clyde will pay $6.50 + $5.50 = $<<6.5+5.5=12>>12 for 5 apples and 5 oranges.
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