# Weighted average - practice problems - page 2 of 5

Direction: Solve each problem carefully and show your solution in each item.#### Number of problems found: 96

- Remaining 2787

Fifty students took a math test. The average number of points was 68. The top 10 students scored 100 points. What is the average number of points for the remaining 40 students? - Daily balance

For the month of April, each checking account has a balance of $555 for 24 days, $2436 for one day, and $243 for five days. What is the account's mean daily balance for April? - A person

A person buys 10 kg of commodity A at a rate of 2 kg per dollar, 20 kg of commodity b at a rate of 5 kilograms per dollar, and 30 kg of commodity C at a rate of 10 kg per dollar. Find the average price of kg per dollar. - Probability 69714

The factory produces 35% of the tiles on line A, which produces scrap with a probability of 0.02, and 65% on line B, where the probability of scrap is 0.03. What is the probability that the selected tile will be defective? - Concentration 3098

Calculate the concentration of the solution prepared from 6 kg of 95% sulfuric acid solution and 24 kilograms of 10% sulfuric acid solution. - Water mixing

We mix 2 liters of water at 100 degrees Celsius warm and 18 liters of water at 32 degrees Celsius warm. What temperature will the water have after mixing? - Pharmacy

The pharmacy adds 3 liters of 95 percent alcohol and 5 liters of 38.04 percent alcohol. How much percent alcohol the pharmacy got? - Certificate

There are 31 students in a class. The mathematics score wasn't worse than 2. The average score in mathematics was 2. How many students have a score of one, and how many have a score of 2? - Solution 42531

What strong solution is created by mixing 3 liters of 30% solution and 2 liters of 70% solution? - A potato

A potato farmer incurred a total cost of $1600 and $2500 from producing 5 and 8 potato bags, respectively, in 2 separate weeks. Find the cost of x bags. - 20 students

Twenty students took a test. Ten students got an average (arithmetic mean) score of 80. Five of them got an average score of 75. And the remaining 5 students got an average score of 55. What is the average score of the 20 students? - Athletic competition

In a 400-meter athletic competition, a participant covers the distance given below. Find the average speed. first 80 meters 10 m/s next 240 meters 7.5 m/s last 80 meters 10 m/s - Water

Mix 67 l of water with a temperature of 67 °C, 17 l warm of 32 °C, and 79 l water of 87 °C. What is the temperature of the mixed water immediately after mixing? - Mixture 2

How many liters of water must be added to 7 liters of a 20% solution to obtain a 10% solution? - Daily average

Calculate the average temperature during the day, when 14 hours were 24 °C and 10 hours was 14 °C. - The temperature 36

The temperature over the course of a day was being monitored. In the morning, the temperature was −3°F. In the middle of the day, the temperature rose to 12°F. After dark, the temperature dropped again to −6°F. What was the average temperature for the day - CuSO4 mixture

How many grams of solid CuSO4 do we have to add to 450g of 15% CuSO4 solution to produce a 25% solution? - Motorcycle 5561

Determine the average speed of a motorcycle ridden 1/3 of the total ride speed at 30 m/s and 2/3 of the total ride speed at 15 m/s. - Remaining 3195

A cyclist covered a track of 40m in 5s. The first section of the 30m track was covered in 3s; the remaining section was covered in 2s. Specify: a) the average speed of the cyclist on the first section of the track b) the average speed of the cyclist on th - Accommodation 7644

Calculate the average price of accommodation for one night and one room from all hotels if I have 3 hotels: 1. The hotel has 34 rooms for 46 euros/night and an offer of 6 nights, 2. The hotel has 22 rooms for 79 euros/night and offers 5 nights, 3. The hot

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