# Direct relationship - 8th grade (13y) - math problems

#### Number of problems found: 179

• Six students
Two pupils painted the class in four hours. How long will it take for six pupils?
• Angles ratio
In a triangle ABC true relationship c is less than b and b is less than a. Internal angles of the triangle are in the ratio 5:4:9. The size of the internal angle beta is:
• Slices of ham
If 17 slices equals 70 calories how many calories are in 5 slices?
• Slope RR
A line has a rise of 2 and a run of 11. What is the slope?
• Acres
Two hours 24 students harvested chestnuts on 36 acres. How many square meters harvested one student per hour?
• String
Divide the string length 800 cm in ratio 1: 5
Convert 270° to radians. Write result as multiple of number π.
• Salary
Calculate the equivalent annual salary to an hourly wage of \$ 19. Assume a 42-hour workweek.
• A bucket
A bucket has 4 liters of water in it when it is 2/5 full. How much can it hold?
• Donuts
Find how many donuts each student will receive if you share 126 donuts in a ratio of 1:5:8
• Saving
Allen save € 2860 to buy a car. Yet it lacks save 55% of the car price. How much is the car?
• Copiers
Three copiers will do the same in an hour k copies. How many copies would be done in an hour by four such copiers? ?
• Acute angles
Sizes of acute angles in the right-angled triangle are in the ratio 1: 3. What is size of the larger of them?
• Accidents
The count of accidents in 1995 caused 8780 women which is 8.4%. How many men caused the accidents?
• Line segment
The 4 cm long line segment is enlarged in the ratio of 5/2. How many centimeters will measure the new line segment?
• Server
Calculate how many average minutes a year is a webserver is unavailable, the availability is 99.99%.
• Temporary workers
Three temporary workers work in the warehouse and unload the goods in 9 hours. In what time would five temporary workers unload the same products?
• Masons
1 mason casts 30.8 meters square in 8 hours. How long casts 4 masons 178 meters square?
• A family
A family of four pays for garbage collection per year 1800 Kč. How many crowns a year the waste company get from the house where lives 93 people?
• Expansion
If one side of the rectangle is larger 4-times and second 2-times, what percentage increases the area of rectangle?

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Direct relationship - math word problems. Examples for 8th grade.