Basic operations and concepts - practice problems - page 3 of 323

Number of problems found: 6443

Two numbers 18
The two numbers are respectively 10% and 25% more than the third figure. What percent is the first of the second?
Cost price 2
If the cost price of 23 toys is equal to the selling price of 20 toys, find the gain or loss percent.
Tax info
The tax-free price of the jacket is €150 and the VAT rate is 24%. Calculate the VAT and Taxable price.
Profit percentage
The ratio of cost price to selling price is 20: 21. What is the profit percentage?
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.
Population - growth
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?

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