Introduction – Solve help percentages:
In mathematics, a percentage is a way of expressing a number as a fraction of 100 (per cent meaning "per hundred" in French). It is often denoted using the percent sign, "%", or the abbreviation "pct". For example, 45% (read as "forty-five percent") is equal to 45/100, or 0.45. Let us see solve help percentages.
- Source from Wikipedia
I like to share this Math Percentages with you all through my article.
Example problems – Solve help percentages:
Problem 1:
How much is 9% of 1400 dollars?
Solution:
Since 1% is `1 / 100` * 1400 = 14 dollars, then 9% is 9 × 14 dollars = 126 dollars.
Problem 2:
A ice burg losses its weight from 140 to 125. What was its percentage weight loss?
Solution:
First, we have to find the absolute weight loss.
140 – 125 = 15 pounds
15 = (x) (140)
15 ÷ 140 = x
15 ÷ 140 = 0.10
Now we have to convert the decimal value as percent form.
To convert the decimal to percent form multiplies it by 100. That is 0.10*100 = 10.
Hence the ice burg losses its weight by 10%.
Problem 3:
Sham borrowed 950 dollars at 9% simple interest, for 3 years. How much did he have to pay back (principal + interest) after the 2 year period?
Solution:
The interest to pay is given by
Multiply the original amount by 9% and interest periods
Interest = 950 * `9 / 100` * 3 = 256.5 dollars
Total to pay back
950 + 256.5 = 1206.5 dollars.
After two years Sham has to pay 1206.5 dollars.
Problem 4:
A sales man sold his vehicle at 24% profit. Its original cost is 300 dollars. Find out the selling price.
Solution:
The gain is 24% of the 300 dollars cost, so the gain is:
`24 / 100 ` = (0.24) (300) = 72
Add the selling price percentage with original price
300 + 72 = 372
The vehicle sold at 372 dollars
Problem 5:
A person buys a laptop in a shop and paid 450 dollars for laptop and 15% for sales tax and 8% for accessories. How much did he pay for his laptop?
Solution:
He paid for laptop, sales tax and accessories, hence
Sales tax = 15% = `15 / 100` * 450 = 67.5
Accessories = 8% = `8 / 100` * 450 = 36
Total paid = 450 + 67.5 + 36 = 553.5 dollars.
Totally he paid 553.5 dollars for his laptop.
Having problem with cbse guess papers class 11 keep reading my upcoming posts, i will try to help you.
Practice problems – Solve help percentages:
Solve help percentage practice Problem 1:
What is 68% of 840?
Answer:
= 571.2
Solve help percentage practice Problem 2:
The original price of a pen was 20 dollars. Now the price was decreased to 15 dollars. What is the percent decrease of the price of this pen?
Answer:
= 25%
In mathematics, a percentage is a way of expressing a number as a fraction of 100 (per cent meaning "per hundred" in French). It is often denoted using the percent sign, "%", or the abbreviation "pct". For example, 45% (read as "forty-five percent") is equal to 45/100, or 0.45. Let us see solve help percentages.
- Source from Wikipedia
I like to share this Math Percentages with you all through my article.
Example problems – Solve help percentages:
Problem 1:
How much is 9% of 1400 dollars?
Solution:
Since 1% is `1 / 100` * 1400 = 14 dollars, then 9% is 9 × 14 dollars = 126 dollars.
Problem 2:
A ice burg losses its weight from 140 to 125. What was its percentage weight loss?
Solution:
First, we have to find the absolute weight loss.
140 – 125 = 15 pounds
15 = (x) (140)
15 ÷ 140 = x
15 ÷ 140 = 0.10
Now we have to convert the decimal value as percent form.
To convert the decimal to percent form multiplies it by 100. That is 0.10*100 = 10.
Hence the ice burg losses its weight by 10%.
Problem 3:
Sham borrowed 950 dollars at 9% simple interest, for 3 years. How much did he have to pay back (principal + interest) after the 2 year period?
Solution:
The interest to pay is given by
Multiply the original amount by 9% and interest periods
Interest = 950 * `9 / 100` * 3 = 256.5 dollars
Total to pay back
950 + 256.5 = 1206.5 dollars.
After two years Sham has to pay 1206.5 dollars.
Problem 4:
A sales man sold his vehicle at 24% profit. Its original cost is 300 dollars. Find out the selling price.
Solution:
The gain is 24% of the 300 dollars cost, so the gain is:
`24 / 100 ` = (0.24) (300) = 72
Add the selling price percentage with original price
300 + 72 = 372
The vehicle sold at 372 dollars
Problem 5:
A person buys a laptop in a shop and paid 450 dollars for laptop and 15% for sales tax and 8% for accessories. How much did he pay for his laptop?
Solution:
He paid for laptop, sales tax and accessories, hence
Sales tax = 15% = `15 / 100` * 450 = 67.5
Accessories = 8% = `8 / 100` * 450 = 36
Total paid = 450 + 67.5 + 36 = 553.5 dollars.
Totally he paid 553.5 dollars for his laptop.
Having problem with cbse guess papers class 11 keep reading my upcoming posts, i will try to help you.
Practice problems – Solve help percentages:
Solve help percentage practice Problem 1:
What is 68% of 840?
Answer:
= 571.2
Solve help percentage practice Problem 2:
The original price of a pen was 20 dollars. Now the price was decreased to 15 dollars. What is the percent decrease of the price of this pen?
Answer:
= 25%
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