Basic functions - practice problems
Number of problems found: 5910
- The salary 4
The salary of a worker is first increased by 5% and then it is decreased by 5% . What is the change in his salary? - To percentages
Convert the following ratios to percentages. (a) 3 : 4 (b) 2 : 3 (c) 5/8 (d) 15/16 - Electronics price loss
Archie buys a TV set for 15000. After some time, he plans to sell it again and reduce the price by 800. What is the percent of loss? - Nautical vs statue mile
A nautical mile is the unit of length used in sea and air navigation. A nautical mile is equal to 6,076 feet. What percent of a statue mile (5,280 ft) is a nautical mile?
- Kareem
Kareem has completed 68 deliveries so far this week. He needs to make 80 deliveries for the week. What percentage of his deliveries has Kareem completed? - Customers 4
Out of the 510 customers, 150 bought at least two items. What percent bought at least two items? - Long hairs
There were 30 students in a class. Eighteen had long hair. What percentage of the class had long hair? - Gallons of gas
Sara drives 171 miles on 7.6 gallons of gas. She uses this information to calculate how many miles per gallon she can drive. Using this result, how many miles can Sara drive on 12.5 gallons of gas? - Unit price 3
A grocery store sells a bag of 6 oranges for $5.64. How much would it cost for 8 oranges?
- Fraction function
If Begin equation . . . y equals . . . begin fraction . . . x raised to the second power minus 3 times x plus 10 . . . over . . . x plus 4 . . . end fraction . . . end equation, find f(5). - Award
Out of 36 students, 16 were awarded, 19 passed, 1 failed. Determines the percentage of honors and successful students in the class. - China's
China's population in 2001 was 1276300000, and in 2005 it was 1307600000. Find the increase in population. - The graph
Given that (-5,8) is on the graph of f(x), find the corresponding point for the function f(x)-2. - Bag of popcorn
The average cost of a bag of popcorn at the movie theater was $3.50 in 1995 and $4.75 in 2015. Find the percent of change in the price of a bag of popcorn from 1995 to 2015 and classify it as a percent increase or percent decrease.
- Cesar
Cesar increased the amount of water he drinks each day from 64 ounces to 72 ounces. By what percentage did Cesar increase the amount of water he drinks each day? - The ratio 17
The ratio of tomatoes to red apples is 2:5. If there are 20 tomatoes, how many red apples are there? - Children
Of the estimated 2 billion children living in the developing world, approximately 400 million do not have access to safe drinking water. Approximately what percentage of children in developing countries do not have safe water to drink? - Express 72
Express the percentage to a fraction. 15% - Convert 8
Convert 11/2 into a percent?
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