Answer:
Step-by-step explanation:
How do you solve this? Or what’s the answer?
1 answer:
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Answer:
632
Step-by-step explanation:
So we can define decreasing x% in two ways: we can define 20% off as 80% of the original value, or we can define subtracting 20% from the original value, and both representations are useful.
In this case it's more useful to define 20% as subtracting 20%, from the original value. The reason for this, is because since we're subtracting 20% of the original value, we then know that 126.40 is 20% the original value.
So to find x% of some value, you generally use the following equation: where A=original amount, and x is the percent. This equation is simply converting the x% to a decimal value. Since 126.40 is 20%, we can derive the following equation.
We can solve for A, by dividing by 0.20
It's also important to note, you didn't really have to set up this entire equation, since you know that the 126.40 is 20%, you simply could've multiplied by 5, since 20% is really just 1/5 of the entire value, so get the entire value, or original value you multiply by 5
Answer:
(a) Loss from selling 15 necklaces
(b)
Step-by-step explanation:
<em>The question has missing details. (See the comment section for missing details)</em>
Given
Solving (a): Will she make a profit from 15 necklaces
To do this, we substitute 15 for b in
The inequality is not true.
<em>Hence, she'll make a loss from selling 15 necklaces</em>
Solving (b): An expression that represents profit.
To do this, we solve for b in
Collect Like Terms
Make b the subject
<em>This implies that to make a profit, she must sell more than 18 necklaces.</em>