Mathematics: If the average of b and c is 8, and d=3b-4, what is the average of c and d in terms of b?

12.5%Step-by-step explanation:percent change is calculated as x 100 change = 32 − 28 = 4 pages x 100% = % = 12.5 % Hope it helps...

If the average of b and c is 8, and d=3b-4, what

jlugo1441

09.08.2021

$\underline{ \huge \mathcal{ Ànswér} } \huge: -$

Average of b and c is 8, that is

$➢ \: \: \dfrac{b + c}{2} = 8$

$➢ \: \: b + c = 16$

$➢ \: \: c = 16 - b$

now let's solve for average of c and d :

$➢ \: \: \dfrac{c + d}{2}$

$➢ \: \: \dfrac{16 - b + 3b - 4}{2}$

$➢ \: \: \dfrac{12 + 2b}{2}$

$➢ \: \: \dfrac{2(6 + b)}{2}$

$➢ \: \: b + 6$

Therefore, the average of c and d, in terms of b is : -

$\large \boxed{ \boxed{b + 6}}$

$\mathrm{✌TeeNForeveR✌}$

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mdbar321

21.09.2021

12.5%

Step-by-step explanation:

percent change is calculated as

$\frac{change}{original\\}$ x 100

change = 32 − 28 = 4 pages

$\frac{4}{32}$ x 100% = $\frac{100}{8}$ % = 12.5 %

Hope it helps

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