you bought 5 chocolate bars and 8 blow pops for $23.25 your sister bought 2 chocolate bars and 13 blow pops for 21.55 how much did each choc

Question

you bought 5 chocolate bars and 8 blow pops for $23.25 your sister bought 2 chocolate bars and 13 blow pops for 21.55 how much did each chocolate bar cost?

in progress 0
RuslanHeatt 3 years 2021-08-14T03:36:14+00:00 1 Answers 11 views 0

Answers ( )

  1. Neala
    0
    2021-08-14T03:37:14+00:00
    Reply

    Answer:

    • $2.65

    Step-by-step explanation:

    Let chocolate bar = c and blow pops = b

    As per given we have equations below:

    • 5c + 8b = 23.25
    • 2c + 13b = 21.55

    13 times the first equation minus 8 times the second to eliminate b and find c:

    • 13(5c + 8b) – 8(2c + 13b) = 13(23.25) – 8(21.55)
    • 65c – 16c = 129.85
    • 49c = 129.85
    • c = 129.85/49
    • c = 2.65

    Each chocolate bar costs $2.65

Leave an answer

Browse

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