Equations practice problems - page 221 of 251
Number of problems found: 5001
- Pupils
Two classes want to collect money. Boys are four-seventh pupils. In time, a quarter of the boys and a sixth of the girls did not pay, which meant 12 sinners. How many pupils attend these two classes? - Sweets
Three chocolates and seven cakes cost 85 CZK. Two chocolates and six cakes cost 86 CZK. How much are five chocolates and nine cakes? I wonder how to get the result, but only by logic, without using a system of equations. - Classroom
In a classroom are 30 students, and boys are four times more than girls. How many boys are in the class? - Garden
The garden has a rectangular shape, a circumference of 130 m, and an area of 800.25 m². Calculate the dimensions of the garden. - Nectar
Nectar collected by bees contains 70% water. The nectar of the same process produces honey which has 19% water. How many kilograms of nectar do bees need to collect to make 1 kg of honey? - Workers
Ten workers must pave the road for 22 working days. After four days were spent speeding up work, two more workers were added. a) After how many work days do workers complete the paved road? b) How many working days does a total paved road take? - Apprentice
A worker and an apprentice can complete a job together in 6 hours. The worker alone can finish it in 10 hours. How long would the apprentice take alone? - Bread
Five of the same breads have the same weight as three pieces and 4 kg of fruit. What weight is one piece of bread? - To the cinema
Jane at 8 AM got a message that all 1093 school pupils would go to the cinema. Within 20 min she said it to the three friends. Each of them again for 20 minutes said to the other three. In this way, the message spread further. At what time do all the scho - Car value
The car loses value by 15% every year. Determine a time (in years) when its price will halve. - Square grid
A square grid consists of a square with sides of a length of 1 cm. Draw at least three patterns, each with an area of 6 cm² and a circumference of 12 cm, and their sides in a square grid. - Spirit
From 55% and 80% spirit, we would like to produce 0.2 kg of 60% spirit. How many of them must we use in a solution? - Lord Ram
When lord Ram was founded, the breed of white sheep was eight more than black. White sheep are four times higher than at the beginning, and black three times as many as at the beginning. White sheep is now 42 more than the black. How many white and black - Container with water
The weight of a container with water is 2.48 kg. Suppose the cast is 75% water, and the container with water weighs 0.98 kg. Determine the weight of the empty container. How much water was originally in the container? - Gasoline
35 l of gasoline is to be divided into four canisters so that in the third canister is 5 l less than the first canister, the fourth canister 10 l more than in the third canister, and the second canister half what in the first canister. How many liters of - Phone number
A phone number with nine digits, none of which are repeated. The middle number in the second three-digit number is 3 times greater than the 6th and twice greater than the 7th. The three-digit number in the middle 3 numbers is 2 times greater than the last - Disease
Farmers'cooperative had a supply of feed for 50 cows for six days. Cows got insidious disease after four days. Ten of them died. How many total days that farmers had feed cows? - Variations 3rd class
From how many elements can we create 13,800 variations of the 3rd class without repeating? - Crates 2
In six crates is 45 kg of apples Five crates are equally apples. In the first crate is 3 kg more apples. How many kilograms are in each crate? - Rectangle
The perimeter of the rectangle is 22 cm, and the area is 30 cm². Determine its dimensions if integers express the length of the sides of the rectangle in centimeters.
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