Question 1146946
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David orders 10 large cups of coffee.Jon orders 4 fewer large cups than David.Jon pays for his orders with a $50 bill.Jon wants to know how much he spent on coffee.
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David:  Exactly 50 dollars for 10 large coffees  --  5 dollars per large coffee


Jon:  {{{10-4=6}}} large coffees, so at $5 per large coffee, the bill is $30.