If a = kb where k is a constant and a = 12 when b = 15, what is the value of a when b =12? A. 4/5 B. 5/4 C. 9 AND 3/5 D. 12 PLEASE SHOW HOW YOU GET YOUR ANSWER!

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asked Nov 28, 2018 7.4k views

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Dmitry Shechtman · Answer 1 · 2018-12-02T17:35:55+0000

a = kb

12 = k15
divide equation by 15 to make k the subject.
k = 4/5 or 0.8

a = kb
a = 0.8 x 12
a = 9.6

(0.6 as a fraction is 3/5)

therefore, a = 9 and 3/5

If a = kb where k is a constant and a = 12 when b = 15, what is the value of a when b =12? A. 4/5 B. 5/4 C. 9 AND 3/5 D. 12 PLEASE SHOW HOW YOU GET YOUR ANSWER!

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