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3 years ago

Allison is twice as old a bob. The sum of their ages is 54. How old is Bob?

Mathematics

1 answer:

frez [133]3 years ago

7 0

Answer:

Step-by-step explanation:

There ages when multiplied by 2, have to equal 54. Simply put, just divide 54 by 2 to get your answer. Thus, the answer is 27

Hope this helps.

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Step-by-step explanation:

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Given:

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Solution:

Chain rule: $\dfrac{d}{dx}f(g(x))=f'(g(x))\cdot g'(x)$

Quotient rule: $\dfrac{d}{dx}\dfrac{f(x)}{g(x)}=\dfrac{g(x)f'(x)-f(x)g'(x)}{[g(x)]^2}$

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Using chain rule and quotient rule, we get

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