Crown

Siblings collect a 2-crowns and 5-crowns. Together have 80 coins with a total of value 310 crowns. How many saved two-crowns and how many five-crowns?

Result

n(2) =  30
n(5) =  50

Solution:

a+b = 80
2a+5b = 310

a+b = 80
2a+5b = 310

a = 30
b = 50

Calculated by our linear equations calculator.

Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! To solve this verbal math problem are needed these knowledge from mathematics:

Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar math problems:

1. Cakes Grandmother baked cakes. Half of its was poppy, quarter with plum jam and 16 cheesecakes. How many cakes she baked in total?
2. Find x Solve: if 2(x-1)=14, then x= (solve an equation with one unknown)
3. Linear system Solve this linear system (two linear equations with two unknowns): x+y =36 19x+22y=720
4. Equation ?
5. Forest nursery In the forest nursery after winter, they found that 1/10 stems died out of them. For them, they land 193 new spruces. How many spruces are in the forest nursery?
6. Simple equation 9 Solve the following equation: -8y+5=-9y+9
7. Bonbons 2 Kilo sweets will cost 260 CZK. The first type has a price per 320 kg, the second type 240 CZK per kg. How many kilos of both kinds of sweets need to prepare a 100 kg mixture ?
8. Simple equation 8 Solve the following equation: 36=-(1+7x)-6(-7-x)
9. Equation 29 Solve next equation: 2 ( 2x + 3 ) = 8 ( 1 - x) -5 ( x -2 )
10. Equation Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
11. Dropped sheets Three consecutive sheets dropped from the book. The sum of the numbers on the pages of the dropped sheets is 273. What number has the last page of the dropped sheets?
12. Examination 2 In an examination, a teacher awards 2 marks for every correct answer and subtract a mark for every wrong answer. If there are 20 questions and a child scored 25 marks how many correct answer did the child get?
13. Simple equation Solve the following simple equation: 2. (4x + 3) = 2-5. (1-x)
14. Boys and girls There are 48 children in the sports club, boys are 10 more than girls. How many girls go to the club?
15. Unknown number 11 That number increased by three equals three times itself?
16. Simple equation Solve for x: 3(x + 2) = x - 18
17. Unknown number Identify unknown number which 1/5 is 40 greater than one tenth of that number.