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Home Q & A Board Science-Related Homework Help Mathematics
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Durham_College Durham_College
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2 years ago Edited: 2 years ago, Durham_College
The price of 3/4-in. copper pipe increased from $5.95 to $7.98 per linear foot at a home building store. What percent increase is this? Round the percent to one decimal place.

Solution:

Given that the price increased, we will use the general formula:

initial + initial(rate) = final

  • The initial price is 5.95
  • The final price is 7.98

Substitute these values into the formula and solve for rate (x):

initial + initial (rate) = final

\[5.95 + 5.95(x) = 7.98\]
Rearrange for x:

\[5.95(x) = 7.98 - 5.95\]
\[x=\frac{7.98-5.95}{5.95}\]
\[x=\frac{2.03}{5.95}\]
\[0.3411\times 100\%=34.1\%\]

Therefore, the price rose by 34.1%.
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