Percentages practice problems - page 11 of 110
Number of problems found: 2193
- A disease
A disease affects 10% of the individuals in a population, and a sample of 100 people was selected from the population. What is the probability of finding the disease in at least 15 people? - Black to brown ratio
In a box, there are 20 pairs of socks, of which 65% are black and the rest are brown. What's the ratio of black and brown socks? - Heat energy
Energy is measured using the unit Joule (J). Temperature is measured using the unit degree Celsius °C). To increase the temperature of 1 liter of water by 1°C, 4200 J of heat energy is required. (a) Kelly wants to increase the temperature of 2 liters of w - Jake desires
Jake desires to purchase a house valued at 3000000. The bank approves his mortgage with a 12% deposit and 5% interest. What is the deposit?
- HST Ontario
Wants to buy some new stylish shoes for back to school in grade 8. These crocs cost 59.99 before tax. How much does he need to pay in total in Ontario (sales tax HST=13%)? - The show
At a show, two-fifths of the people are men, and the rest are women. 30% of the men are over 60 years old. 40% of the women are over 60 years old. What fraction of the people are less than 60 years? - I have 2 I have $907 to pay 13 people. Five people will receive half of what the other 8 people will receive. How much will the payments to each person be?
- Cheap chocolate
Lucy's chocolate bar is 29% cocoa. If the weight of the chocolate bar is 100 grams, how many grams of cocoa does it contain? Round your answer to the nearest tenth. - 670 person
Six hundred seventy people were tested for RT-PCR. As a result, 80% tested negative. How many tested positive?
- False positive, false negative
Suppose the likelihood of someone being allergic to cats is 1/1000 of the general population. A test to determine if you're allergic to cats has a false positive rate of 5%; that is, 5% of the time, the test will indicate incorrectly that you are allergic - What is 26
What is the selling price of goods listed at P580 less discounts of 20%,12 1/2%, and 5.5%? - Mr. Latif
Mr. Latif receives a salary of Rs.6000 per year plus 5% of all his sales over Rs.10000 and a special bonus of RS.500 if his sales exceed RS.20000. What are his earnings during a year when his sales total 21000? - Percent increase
What is the base figure if 2000 is the end figure and the base figure was increased by 18% - Two sides 2
Two sides of a triangle are 12 and 15, and the perimeter is 40. Find the other side.
- A company 2
A company invests 51000. After 4 years of growth at the same rate each year, the investment is worth 68920. Find the annual growth rate as a percentage. - A merchant 2
A merchant bought some items for P175.00 a dozen less 20% and sold them at a profit of 35% of the selling price. What was the selling price of one item? - Cost and profit
Find the cost of goods that sold for P800.00 and which profit of 25% was made on cost. - Terrance
Terrance budgets $435 of his salary for car expenses. His salary is $2 900. What percent of his salary is budgeted for car expenses? - Titanic
Titanic and Star Wars have made the most money at the box office. Star Wars made about 76.7% of the money that Titanic made at the box office. If Star Wars made about $461 million, how much did Titanic make? Round to the nearest million dollars.
What is the median value in this list? 6/10,1/2,0.9,75%,0.03Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
