Mrs. Chang spent $44 for a movie ticket and snack for each of her 4 children. Each snack cost $3.50. Each snack cost $3.50. Each movie ticket cost the same amount. One of Mrs. Changs children wrote the incorrect equation to find x, the cost in dollars, of each movie ticket. 4x 3.50=44. Explain why this equation is incorrect and write the right equation. example-2x-9=90

Question

Mathematics

Maci Dalton

17 July, 02:58

Mrs. Chang spent $44 for a movie ticket and snack for each of her 4 children. Each snack cost $3.50. Each snack cost $3.50. Each movie ticket cost the same amount. One of Mrs. Changs children wrote the incorrect equation to find x, the cost in dollars, of each movie ticket. 4x 3.50=44. Explain why this equation is incorrect and write the right equation. example-2x-9=90

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Avery · Answer 1

4x + 3.50 = 44. this equation is wrong because 3.50 is only good for 1 child. there are 4 children so, 3.50 must be multiplied by 4.

Correct equation is: 4x + 14 = 44 where 14 = 4 * 3.50

let x be the cost of the movie ticket.

number of children = 4

total cost of movie tickets = 4x

total cost of snacks = 4 (3.50)

total cost = 44

TC of movie tickets + TC of snacks = 44

4x + 4 (3.5) = 44

4x + 14 = 44

4x = 44 - 14

4x = 30

4x / 4 = 30 / 4

x = 7.50 cost of movie ticket