Reason + equation - practice problems - page 8 of 36
Number of problems found: 710
- Father and son
When I was eight years old, my father was 30 years old. Today, my father is three times more than me. How old am I? - The orchard
Four temporary workers harvested the orchard in 9 days. How many temporary workers do we need for six days? - Rectangles
How many different rectangles can be made from 60 square tiles of 1 m square? Find the dimensions of these rectangles. - Tractors
Five tractors will plow the field for 8 hours. In 2 hours, one tractor broke down. How long do the remaining tractors complete the plow? - Buns and toasts
Two buns weigh 10 grams more than two toasts. One Bun and two Toast weigh a total of 110 grams. How many grams weigh three toasts? How many grams does a Bun weigh? - Tadeus
Tadeus and Jolana have a total of CZK 15. Jolana has half that of Tadeus. Nevertheless, Jolana has three coins and Tadeus 2. Which coin does Tadeus have and which Jolan? - Pets in ZOO
The zoo has run for pets. They are chickens, pigs, and cows. Altogether there has 20 heads and 60 feet. How many chickens and piglets are there? - Walnuts
x walnuts were in the mission. Dano took 1/4 of the nuts, Michael took 1/8 from the rest, and John took 34 nuts. It stayed here 29 nuts. Determine the original number of nuts. - Nuts
Peter has 49 nuts. Walnuts have three more than hazelnuts and hazelnut two over almonds. Determine the number of walnuts, almonds, and hazelnuts. - 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? - Unknown number 10
The number first increased by 30%, then by 1/5. What percentage we've increased the original number? - Ski lessons
The ski course attends 80 pupils. They live in triple and quadruple rooms. Count if rooms are the 23. How many are triple and quadruple rooms? - CZK coins
Thaddeus and Jolana together have 15 CZK. Jolana has half of Thaddeus' money. Nevertheless, Jolana has three coins and Thaddeus 2 coins. Which coin has Thaddeus and Jolana (Help: CZK coins have values 1,2,5,10,20,50 CZK)? - Chicken and rabbits (classic)
Grandmother bred chickens and rabbits. It found that the yard has 25 heads and 70 legs. How many chickens and rabbits breed in the yard? - Roofers 82541
Three roofers cover a third of the roof in 10 days. In how many days would 5 roofers cover the entire roof at the same rate? - Beginning 16773
In the beginning, there are two boys and x girls. Then another three children will come to the class. In the end, there are three times fewer boys than girls. How many girls and boys are in the class - Numbers 13691
Write the number 126 as the sum of three numbers, which ratio is 2: 5: 7 - Two-digit 7607
The digit sum of a two-digit number is 11. After changing the order of the digits, I get a number 27, smaller than the intended number. What number do I think? - Increased 7062
I think the number. I will increase it by 6, then decrease the increased number by 12, and then multiply the result by the number -2. I divide the product by the number -8 and get the number -4. What number do I think? - Equation 6738
Solve the given equation in the set N: 1 - x + x² - x³ + x4 - x5 +…. + = 1/3
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