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A gardener is planting two types of trees:

Type A is 3 feet tall and grows at a rate of 21 inches per year.

Type B is 8 feet tall and grows at a rate of 15 inches per year.

Algebraically determine exactly how many years it will take for these trees to be the same height.

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Answers (2)
  1. 27 May, 13:14
    0
    10 years

    Step-by-step explanation:

    let they become of same height after t years

    3ft=36 inches

    hence

    height of A

    Ha=36+21t

    8ft=96 inches

    height of B

    Hb = 96+15t

    as Ha = Hb

    36+21t = 96+15t

    21t-15t = 96-36

    6t=60

    t=60/6

    t = 10 years
  2. 27 May, 13:14
    0
    Answer: It'll take 11 years for them to be the same height at 20 feet and 6 inches.
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