Basic operations and concepts - math word problems - page 275 of 332
Number of problems found: 6633
- Bicycle gear
The pedal bicycle wheel has 56 teeth and a rear 20-gear tooth. How many times does the bicycle wheel turn when you make 20 turns of the pedal wheel? - Tractors
Two tractors plow the field for 4 hours together. If the first tractor plowed half of the field and then the second tractor completed the job, it would take 9 hours. How many hours does the field plow for each tractor separately? - Workers
Nine workers dig a 120-meter-long canal in eight hours. How long would it take five workers to dig a 200-meter-long canal? - Pumps
Four identical pumps fill the tank in 40 hours. How many pumps would we have to use if we wanted to save 8 hours? - Gardeners needed
Five equally skilled gardeners mowed one-third of the park in 12 hours. How many gardeners need to be called to mow the rest of the park in 8 hours? - Cows
Twenty cows have food for 60 days. We reduce the dose to two-thirds for 18 cows. How many days will it feed? - Machines 2
Two machines produce 2,000 products in 50 hours. How many machines do you need to buy to make 15,000 products in 30 hours? - Solutions
How much is the 60% solution, and how much 35% solution needed to create 100 l of the 40% solution? - Mukls
The six workers' working group would order jobs completed within 21 working days. How many workers must be added to complete a contract in 14 working days? - Two workers
The first worker completed the task by himself in 12 hours, and the second in 10 hours. After two hours of joint work left, the first worker went to a doctor, and the second finished the job himself. How many hours did the second worker work himself? - Kerosine and petrol
If 4 liters of petrol containing 15% kerosine are added to another 7 liters of petrol containing 10% kerosine, what percentage of the petrol is kerosine? - Average mark
Calculate the average grade in English if a student received 2 grade 3 s, 20% fewer grade 2 s than grade 3 s, and 50% more grade 1 s than grade 2 s. - Cinema seating ways
How many different ways can Millie, Peter, Joseph, and Renata sit next to each other in a cinema if Millie always sits in seat 1 and Peter always sits in seat 4? List all possibilities. - Seven segments display
Electronic devices sometimes use the type of digits below, where each digit uses some short stripes. For example, seven uses three small stripes. What is the largest three-digit number that you can make if you use twenty stripes? - The manufacturer
The manufacturer found that 3% of the plates produced had a malfunction. Of the complaint, 75% are first and 25% second. What is the probability of producing first and second-class plates? - Boys and girls
There are 20 boys and ten girls in the class. How many different dance pairs can we make of them? - Prize
How many ways can 9 participants be rewarded with the first, second, and third prizes in a sports competition? - Commitee
A class consists of 12 males and 15 females. How many committees of 6 are possible if the committee must consist of 4 males and 2 females? - Kids
How many different ways can sit 6 boys and 3 girls in line if girls want to sit on the edge? - 7 heroes
6 riders are galloping on 6 horses in single file. In how many ways can they be arranged in order?
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