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3 years ago

Joline came home from the mall, boasting that she bought a $35.00 skirt for only $10.50. What percent discount did she get?

Mathematics

2 answers:

OleMash [197]3 years ago

7 0

Answer:

70%

Step-by-step explanation:

=10.50/35.00%

=30%

Joline bought the skirt by paying 30% of the original value.

=100%-30%

=70%

Joline gets a discount of 70%.

yarga [219]3 years ago

7 0

Answer:

The answer is seventy percent. To find this, first find the amount of the discount, and then use a proportion to find the percent. Here’s the idea.

First, set up a proportion. To determine the amount of the discount, subtract the price paid from the original price.

Next, replace the words in the proportion with the known amounts. Then, cross multiply. Twenty-four dollars and fifty cents times one hundred equals percent of discount times thirty-five dollars.

Now, divide both sides of the equation by thirty-five dollars. And, we find that Joline’s skirt was sold at a seventy percent discount!

:-)

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Read 2 more answers

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beks73 [17]

Answer:

Part A:

$4 + x = y$

$0.5*4 + 1*x = 0.7*y$

$x = 8/3\ quarts\ of\ 100\%\ solution$

$y = 20/3\ quarts\ of\ 70\%\ solution$

Part B:

$x + y = 10$

$2x + 3y = 23$

$x = 7$ and $y = 3$

Step-by-step explanation:

Part A:

The inicial concentration of the lemonade is 50%, and the volume is 4 quarts, and we will add x quarts of a lemonade with a concentration of 100%, so the total volume will be y, and the concentration will be 0.7, so we have that:

$4 + x = y$

$0.5*4 + 1*x = 0.7*y$

Using the value of y from the first equation in the second one, we have:

$2 + x = 0.7*(4 + x)$