Can someone else explain it but more easier for an 8th grader
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In January, gasoline cost $1.05 per gallon. In July, gasoline cost $1.20 per gallon. Find the percent of increase.
Would the answer for this question be 14.3?
And how do you do percent of decrease?
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The original cost of a computer is $900. If the price is decreased by 15%, what is the sale price?
I need help with this question(:
Thank you
1.20 - 1.05 = 0.15
0.15 / 1.05 = 0.143 = 14% decrease
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900 * 0.15 = 135
900 - 135 = 765
Kenya -- we have students posting upper level high school and college math. After this I suggest you use 8th grade math as your subject.
oh ok
Sure! Let's break down the questions and go through the steps to find the answers.
1. Finding the percent increase:
To find the percent increase, we need to calculate the difference between the original and the new price, and then divide that difference by the original price. Finally, we multiply the result by 100 to get the percentage.
Here's how you can find the percent increase for the gasoline cost example:
Step 1: Calculate the difference between the new price and the original price
$1.20 (new price) - $1.05 (original price) = $0.15
Step 2: Divide the difference by the original price
$0.15 / $1.05 = 0.14285714285714285
Step 3: Multiply the result by 100 to get the percentage
0.14285714285714285 * 100 = 14.29 (approx.)
So the percent increase in gasoline cost is approximately 14.29%.
2. Finding the percent decrease:
To find the percent decrease, we use the same process as finding the percent increase. The only difference is that we subtract the new price from the original price to calculate the difference.
Here's how you can find the percent decrease for the computer sale price example:
Step 1: Calculate the difference between the original price and the new price
$900 (original price) - ($900 * 0.15) (15% decrease) = $900 - $135 = $765
Step 2: Divide the difference by the original price
$135 / $900 = 0.15
Step 3: Multiply the result by 100 to get the percentage
0.15 * 100 = 15
So the percent decrease in the computer sale price is 15%.