Equations practice problems - page 210 of 239
Number of problems found: 4767
- Competition
The competition organizers wanted to spend a large amount of money to pay for the competitors. One-third of this amount was spent on prizes and the remaining € 5,000 on diplomas. How much was committed for rewards?
- Exchange rate - currency
The exchange rate list in the table is an exchange office, but question marks replace some values. The exchange office exchanges money at the rates quoted and does not charge any other fees. nákup prodej 1 EUR 26,20 CZK 28,00 CZK 1 GBP b=? CZK c=? CZK 1.
- Trip
On the trip drank 3/10 of pupils tea, 2/5 cola, 1/4 mineral water, and the remaining three juice. How many students were on the trip?
- 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
The worker and apprentice execute the work for 6 hours. The worker performs himself in 10 hours. How long does the work of an apprentice take?
- 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?
- 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?
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