What are the concepts you learned in the chapter Comparing Quantities {class 8
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Answers
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Fractions and Ratios
A fraction represents a part of a whole which consists of numerators and denominators and it is the division of two same quantities.
Eg: 35
Ratio is the comparison of one value to the other or the comparison of two different quantities.
Eg:3:5
To know more about Fractions, visit here.
Finding the Increase or Decrease in Percent
Finding Increase or Decrease Percentage in Situations
Finding new number, when there is increase in percentage.
New number = original number + (increase in percentage × number)
Ex : The Cost of a mobile phone is Rs 15,000. Find the new price if there is a increaseof 5%
New price = original price + 5% of original price
New price = 15,000+5100 ×15,000
New price = 15,000+750 = 15,750
Here Rs 750 is increase in the price.
The new number can be found out using,
New number = original number × percentage increase
Ex : New price = 15,000×105÷100=15,000×1.05=15,750
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