A local pizzeria sells a small pizza with one topping for $6 and a small pizza with three toppings for $8. What is the charge for a plain small pizza?

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Presentation transcript:

A local pizzeria sells a small pizza with one topping for $6 and a small pizza with three toppings for $8. What is the charge for a plain small pizza? What is the price per topping?

Solution P + t = $6 P + 3t = $8 -t -t P = $6 – t ($6 – t) + 3t = $8 -6 -6 2t = $2 2 2 t = $1 Since P + t = $6, P +$1 = $6, so P = $5!

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At an ice cream parlor, ice cream cones cost $1.10 and sundaes cost $2.35. One day, the receipts for a total of 172 purchases were $294.20. How many cones were sold?