A bracelet was marked up $50 from cost, which amounts to a 20% increase. Find the original cost of the bracelet.
2 answers:
Answer:
The original cost of the bracelet was $250.
Step-by-step explanation:
A bracelet was marked up $50 from cost, which amounts to a 20% increase.
Let the original cost be x.
We can understand in simpler terms that 20% of x is $50.
So, we can find x.
x = 250
Hence, the original cost of the bracelet was $250.
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Answer:
2.4×10^6
Step-by-step explanation:
Put the numbers where the variables are and do the arithmetic. You can enter the numbers in scientific notation into your (scientific) calculator and have it show you the result in the same format.
r = (3.8×10^5)^2/(5.9×10^4) . . . . . denominator parentheses are required
Please note that in the above expression, parentheses are required around the denominator number. This is because it is a product of two numbers. In your pocket calculator or spreadsheet, you can enter that value as a single number (not a product). Parentheses are not required when you can do that.
r = (3.8²/5.9)×10^(5·2-4) ≈ 2.4×10^6
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The "exact" value is a repeating decimal with a long repeat. We have rounded to 2 significant digits here because the input numbers have that number of significant digits.
Answer
Find out the conversion factor for seconds to minutes and convert 135 seconds to minutes.
To prove
1 minute = 60 second
for seconds to minutes.
Therefore the conversion factor for seconds to minutes be
Now convert 135 seconds to minutes.
= 2.25 minutes
Hence proved