Suppose the numbers A and B are directly proportional. Given that A = 6 when B = 14, what is the value of B if A = 9?
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If A:B is 6:14 then A/B=6/14
let the new B be x,
so if A/B=9/x
=> 6/14=9/x
=> x=9/6*14
x=21
let the new B be x,
so if A/B=9/x
=> 6/14=9/x
=> x=9/6*14
x=21
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