Gitta is planning a birthday party. she has an $80 budget. pizzas cost $5 each,2-liter bottles of soda cost $3 each, and delivery is charged at a flat rate of $5.if she buys 12 pizzas, how many bottles of soda can she buy? how to solve

We are given with the total budget of $80 that is to be divided to pizza, soda, and the service charge. The equation to be followed as a representation to this problem is 80 = 5 + 5x + 3y where x is the number of pizzas and y is the number of bottles bought. if x is 12, then

75 = 60 + 3y 
15 = 3y 
y = 5 soda bottles

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

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