Algebra Question 1

5. Business B pledged $20 million less
than twice the amount pledged by
Business A. Business C pledged $200
million less than twice the amount
pledged by Business B. If x represents
the amount pledged by the Business A,
write expressions to show the amounts
pledged by Business B and Business C
in terms of x.

b. The combined pledges of Business A,
Business B, and Business C totaled
$1035 million. Write an equation that
can be used to determine how much
each business pledged.

(I have no idea how to do this problem)

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  1. business A --- x , x in millions
    business B --- 2x - 200
    business C --- 2B - 200 = 2(2x-200) - 200

    x + 2x-200 + 2(2x-200) - 200 = 1035

    x +2x- 200 + 4x - 400 -200 = 1035
    7x = 1835
    x = 262.143 million

    Check:
    A pledged 262.143 million
    B pledged 324.286 million
    C pledged 448.571 million


    262.143+324.286+448.571 = 1035

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  2. Thank you so much!

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  3. business A=x
    business B=2x-20
    business C=2x-20+2(2x-20)-200
    x+2x-20+2(2x-20)-200=1035
    x+2x-20+4x-40-200=1035
    7x=1035+20+40+200
    7x=1295
    x=185
    Bus. A pledged $185 million
    Bus. B pledged 185x2=370-20=350 million
    Bus. C pledged 350x2=700-200=500million
    185+350+500= $1035 million

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