Percentage problem 2

On a 25 questions Math test, Peter got 60% of the 10 algebra questions correct, 80% of the 10 geometry questions correct and 60% of the 5 trigonometry questions correct. What percentage of all the questions did Peter get correct?

Expert Solution

60% of the 10 algebra questions correct

60% * 10 = 6

80% of the 10 geometry questions correct

80% * 10 = 8

60% of the 5 trigonometry questions correct

60% * 5 = 3

Total number of questions correct

6 + 8 + 3 = 17

Percentage of correct questions that Peter got correct is

17 / 25 = 0.68 = 68%

68%

Nipun Maity answered 2 years ago

Percentage Problem 6

The price of an item changed from $120 to $100. Then later the price decreased again from $100 to $80. Which of the two decreases was larger in percentage term?

Percentage problem 5

Mary has a monthly salary of $1200. She spends $280 per month on food. What percent of her monthly salary does she spend on food?

Population percentage Problem

Out of a world population of approximately 6.6 billion, 1.2 billion people live in the richer countries of Europe, North America, Japan and Oceania and is growing at the rate of 0.25% per year, while the other 5.4 billion people live in the lees developed countries and is growing at the rate of 1.5%. What will be the world population in 5 years if we assume that these rates of increase will stay constant for the next 5 years.

Percentage problem of real life

The price of an item decreased by 20% to $200. Then later the price decreased again from $200 to $150. What is the percent of decrease from the original price to the final price of $150?

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