A store sells bags of gold fish for $3.00, bags of animal crackers for $3.50, and bags of gummies for $4.00. One day, 15 bags of snacks were

Question

A store sells bags of gold fish for $3.00, bags of animal crackers for $3.50, and bags of gummies for $4.00. One day, 15 bags of snacks were sold at $53 was earned for the sales. Two more bags of animal crackers were sold than goldfish. How many bags of each type of snack were sold?

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Ngọc Khuê 7 months 2021-07-20T12:21:38+00:00 1 Answers 3 views 0

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  1. taiduc
    0
    2021-07-20T12:22:54+00:00
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    Answer:

    Kindly check explanation

    Step-by-step explanation:

    Given the following :

    Selling price of bags of gold fish(f) = $3

    Selling price of bags of animal crackers (a) = $3.50

    Selling price of bags of gummies(g) = $4

    Sales on a particular day:

    Total snack sold = 15

    Total price of sales = $53

    Two more bags of ‘a’ were sold than ‘f’ ; hence ‘a’ = 2 + f

    f + a + g = 15 ;

    f + 2 + f + g = 15 ; 2f + g = 15 – 2 ;

    2f +g = 13 – – (1)

    3f + 3.5a + 4g = 53

    3f + 3.5(2 + f) + 4g = 53

    3f + 7 + 3.5f + 4g = 53

    6.5f + 4g = 46 – – – (2)

    From (1)

    g = 13 – 2f

    6.5f + 4(13 – 2f) = 46

    6.5f + 52 – 8f = 46

    -1.5f = – 6

    f = 4

    g = 13 – 2(4)

    g = 13 – 8

    g = 5

    a = 2 + f

    a = 2 + 4

    a = 6

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )