Evaluate $10 % o f 20 - 40 % o f 60 + 80 % o f 80$

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Solution

Evaluation of the given expression using BODMAS:
$10 % o f 20 - 40 % o f 60 + 80 % o f 80$
First we convert the percentage into fractions,
$= \frac{10}{100} \times 20 - \frac{40}{100} \times 60 + \frac{80}{100} \times 80 = 2 - 24 + 64 = 42$
Therefore, the solution is $42$ .

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Q. The marks obtained by 40 students of a class are given below: 80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60 and 60.
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The marks obtained by $40$ students of a class are given below :
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Evaluate 10%of20-40%of60+80%of80

Evaluation of the given expression using BODMAS:10%of20-40%of60+80%of80First we convert the percentage into fractions,=10100×20-40100×60+80100×80=2-24+64=42Therefore, the solution is 42.

Evaluate $10 % o f 20 - 40 % o f 60 + 80 % o f 80$

Evaluation of the given expression using BODMAS:
$10 % o f 20 - 40 % o f 60 + 80 % o f 80$
First we convert the percentage into fractions,
$= \frac{10}{100} \times 20 - \frac{40}{100} \times 60 + \frac{80}{100} \times 80 = 2 - 24 + 64 = 42$
Therefore, the solution is $42$ .