Simple proportion - practice problems - page 2 of 16
The trinomial is the mathematical notation of the calculation of the unknown term of direct or indirect proportionality from three known values. We write three known values and one unknown on two lines and add arrows. In the same direction if the values are directly proportional, or in the opposite direction if they are inversely proportional. It is a tool for solving the equality of two ratios.Number of problems found: 311
- Sami received
Sami received a salary of € 73.50 for 7 hours. How much would the salary have been in 8 hours?
- Flour to sugar ratio
I need 4 1/5 of flour for every 2/5 cups of sugar. How much sugar do I need for 8 cups of flour?
- Ruel cut
Ruel cut the grass on 1/5 of a hectare in an hour. How long will it take him to cut the grass on 3/4 of a hectare?
- Employees 16
There are 3 full-time employees in your office for every 5 who are part-time. If there are 25 part-time employees, how many full-time employees are there?
- The distance 3
The distance covered by car in 1 hour is 38 1/2 km. Find the distance it will cover in a) 3 1/2 hours, b) 5 hours.
- Three chefs
Let's say you have 3 Chefs that have made 14 cakes in 8 hours. Assuming they are working at the same efficiency, how many hours does it take 10 Chefs to bake 24 cakes? (Rounded to the nearest hour)
- Minutes 83730
In one minute, 3 and 1 and a half liters of water flow out. How many liters of water will flow out in 2 and 1 half minutes?
- Kilogram chleba
We need 750g of flour for one kilogram of bread. How much flour do we need for 20 loaves weighing 1200 g?
- Plums 83656
From 2 kg of fresh plums, we get 400 g of dried plums. How many fresh plums do you need for 2 kg of dried?
- Tightened 83632
The key works like a lever, where one arm is the radius of the bolt, and the other is the length of the key. If key no. 12 (for screws with a diameter of 12 mm) and a length of 12 cm can be tightened with a maximum force of 100 N, what force does the wren
- Collection 83537
Nine-year-old Lucia is preparing for testing. He solves a collection of 40 tasks per day. He will need 9 days to solve all the tasks. How many days earlier would she finish if she solved 60 tasks a day?
- Families 83209
Coal for 15 families lasts 60 days. How many days will the coal last for 20 families?
- Kilograms 83204
Nine kilograms of bell metal contain 7 kg of copper, the rest of which is tin. How much copper and how much tin were used to cast five bells? Each of the two larger bells weighed 535kg, and each of the remaining three smaller ones weighed 286kg.
- Percentage 83199
The selling price is 5.75 EUR, and the buying price is 4 EUR. By what percentage was the price increased?
- Increased number
A farmer has 250 cows. One cow has 5m² in the cowshed. When their number increases by 26, how much m² will the space for one cow decrease?
- Containers 82736
Two filling machines fill 250 containers in 2 hours. How many containers will 4 machines fill in 3 hours?
- Railings 82711
Seven part-timers paint 280 m of railings in 5 hours. How many meters of railing will nine part-timers paint in 4 hours?
- Harvested 82548
Farmers harvested 1110q of grain from 37 hectares of wheat. a) how many q of wheat did they harvest from 12 hectares? b) how many grains were harvested from 1 m². C) how big is the side of the square of the field from which they harvested 1q of wheat?
- Describes 82518
The minute hand describes an angle of 180 degrees in half an hour. In how many minutes does the minute hand cover an angle of 192 degrees?
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