Reason + system of equations - math problems
Number of problems found: 194
3 chocolate and 7 cakes cost 85, - CZK. 2 chocolates and 6 cakes cost 86, - CZK. How much is 5 chocolates and 9 cakes? I wonder how to get the result, but only by logic without the use of a system of equations
- Have solution
The sum of four consecutive even numbers is 92. Determine these numbers.
Solve algebrogram: mama+anna=vari How many solutions are?
- Three ints
The sum of three consecutive integers is 2016. What numbers are they?
- Unknown numbers
The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
- Large family
I have as many brothers as sisters and each my brother has twice as many sisters as brothers. How many children do parents have?
In 1960 my age was equal to the digits sum of the year of my birth. What is my age now?
On the circus performance was 150 people. Men were 10 less than women and children 50 more than adults. How many children were in the circus?
- Three friends
The three friends spent 600 KC in a teahouse. Thomas paid twice as much as Paul. Paul a half less than Zdeněk. How many each paid?
Figliarko has 13 cents less than Hana. Together they have 57 cents. How many cents has Hana and how many Figliarko?
A bottle of wine costs 21 euros; and wine is 20 times more expensive than a bottle. How much a bottle cost?
Some friends had to collect the sum 72 EUR equally. If the three refused their part, others would have to give each 4 euros more. How many are friends?
- Odd numbers
The sum of four consecutive odd numbers is 1048. Find those numbers ...
- Father and son
Father and son are together 78 years. Son is 25 years younger than father. How old is the son?
- Difference of two number
The difference of two numbers is 20. They are positive integers greater than zero. The first number raised to one-half equals the second number. Determine the two numbers.
- Unknown number 10
Number first increased by 30%, then by 1/5. What percentage we've increased the original number?
Susan is 3 years and as she will be old as Teodor now him will be 11. How old is Teodor today?
Coffee from the machine in the cup cost 28 cents. Coffee is 20 cents more expensive than the cup. How much is the cup?
Peter has 49 nuts. Walnuts have 3 more than hazelnuts and hazelnut 2 over almonds. Determine the number of wallnuts, almonds and hazelnuts.
- Magic number
The number 135 split to two addends so that one addend was 30 greater than 2/5 the addend.
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