proportion

5 chocolates cost $25. What will 15 chocolates cost? Set up a proportion of chocolates to cost, where p is the price of 15 chocolates: 5/25 = 15/p Using our proportion calculator, we get p = 75

The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 6 to 5. If there were 4570 no votes, what was the total number of votes? Set up a proportion where y is the number of yes votes to 4570 no votes 6/5 = y/4570 Using our proportion...

The ratio of men to women working for a company is 3 to 4. If there are 81 men working for the company, what is the total number of employees? Men to women is 3:4. Set up a proportion where w is the number of women: 3/4 = 81/w Using our proportion calculator, we get w = 108. The problem asks...

The ratio of girls to boys is 14 girls to 12 boys. If there are 6 boys, how many girls are there? Set up a proportion of girls to boys: 14/12 = g/6 Using our proportion calculator: g = 7

How much do 10 pieces of candy cost if 1000 pieces cost 100.00? Set up a proportion of pieces to cost 10/x = 1000/100 Divide the right side by 100 on top and bottom 10/x = 10/1 x = 1

Jason wrote a total of 8 pages over 2 hours. How many hours will Jason have to spend writing this week in order to have written a total of 12 pages? Assume the relationship is directly proportional. Set up a proportion of pages to hours 8 pages/2 hours = 12 pages/x hours enter 8/2 = 12/x into...

The margarita is one of the most common tequila-based cocktails, made with tequila, triple sec, and lime juice, often served with salt on the glass rim. A manager at a local bar is concerned that the bartender is not using the correct amounts of the three ingredients in more than 50% of...

a manufacturing company has a debt to equity ratio of 3 to 2. if the company has a debt of $12 million, how much does it have in equity? Set up a proportion of debt to equity 3/2 = 12/x Using our proportion calculator, we get: x = 8

Julia has a bucket of water that weighs 10lbs. The total weight is 99% water. She leaves the bucket outside overnight and some of the water evaporates, in the morning the water is only 98% of the total weight. What is the new weight? Setup the proportion: 0.99/10 = 0.98/w Using our...

Construct a confidence interval of the population proportion at the given level of confidence. x = 120, n = 300, 99% confidence Round to 3 decimal places as needed 0.327 < p < 0.473 using our proportion confidence interval calculator

The NJ state education department finds that in a random sample of 100 persons who attended college, 40 received a college degree. What's the 95% confidence interval for the proportion of college graduates out of all the persons who attended college? Proportion Confidence Interval Test 0.304 <...

Suppose that the manager of the Commerce Bank at Glassboro determines that 40% of all depositors have a multiple accounts at the bank. If you, as a branch manager, select a random sample of 200 depositors, what is the probability that the sample proportion of depositors with multiple accounts is...

A candidate for mayor wants to gauge potential voter reaction to an increase recreational services by estimating the proportion of voter who now use city services. If we assume that 50% of the voters require city recreational services, what is the probability that 40% or fewer voters in a sample...

Frank averages 1 strike for every 4 frames that he bowls. If he bowled 48 strikes in 1 season, how many frames did Frank bowl? Set up a proportion of strikes to frames: 1/4 = 48/x Run this through our proportion calculator: x = 192 frames

Bridget can grow 6 flowers with every seed packet. With 4 seed packets, how many total flowers can Bridget have in her garden? Set up a proportion of flowers to seed packets where f is the number of flowers for 4 seed packets. We have: 6/1 = f/4 Cross multiply: f(1) = 24 f = 24

You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants? Set up a proportion of gallons to plants: 4/30 = x/45 where x is the gallons of water needed for 45 plants. Use our proportion calculator: x = 6

Renee sells 6 gifts in 20 minutes. How many might she sell in 4 hrs What is 4 hours in minutes? 4 hours = 4 * 60 = 240 minutes. Now we are on a minutes to minutes basis, set up a proportion: 6/20 = x/240 where x is the number of gifts in 240 minutes (4 hours) Using our proportion calculator...

A shopper paid $51.93 including tax for an item marked $48.99. What would she pay for another item marked $75? Set up a proportion, assuming identical tax rates: 51.93/48.99 = 75/x where x is the after-tax amount Using our proportion calculator, we get: x = 70.75

There are some red counters and some yellow counters in the ratio 1:5. There are 20 yellow counters in the bag. Set up a proportion where x is the amount of red counters to 20 yellow counters 1/5 = x/20 Enter that in the search engine and our proportion calculator gives us: x = 4

If it takes 3/4 cup of flour to make 10 pancakes, how much flour will it take to make 40 pancakes? Set up a proportion of flour to pancakes: 3/4/10 = x/40 3/4 is 0.75, so use our proportion calculator: x = 3