# Two numbers

Determine the numbers x and y so x + y = 8 is truth and the numbers are in the ratio of 4: 5.

Result

x =  3.556
y =  4.444

#### Solution:

x+y=8
5x = 4y

x+y = 8
5x-4y = 0

x = 32/9 ≈ 3.555556
y = 40/9 ≈ 4.444444

Calculated by our linear equations calculator.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

#### To solve this example 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? Do you have a system of equations and looking for calculator system of linear equations?

## Next similar examples:

1. Number ratio
Calculate two positive numbers that its ratio is 4:4 and sum was 184.
2. Two numbers
Find two numbers whose difference and ratio is 10.
3. Football match 4
In a football match with the Italy lost 3 goals with Germans. Totally fell 5 goals in the match. Determine the number of goals of Italy and Germany.
4. Meat
Half a kilogram of pork and three-quarters of a kilogram of beef cost total 6.6 USD. One quarter of a kilogram of beef and 1 kilogram of pork cost 6.3 USD. Determine the price of 1 kg of each type of meat.
5. Translations
If I going to translate the book 6 pages per day I translate it 4 days earlier than if I translated 5 pages a day. If I translate 4 pages a day I translate it for how many days.....?
6. Mother and daughter
The ratio of years mother and daughter is 5:2. After 7 years the ratio is 2: 1. How many years ago daughter was born?
7. Unknown number
Identify unknown number which 1/5 is 40 greater than one tenth of that number.
8. Boys and girls 2
The ratio of boys to girls in math club is 4:3 . After 8 more girls joined the Club, the ratio become 1:1. How many members are there in the club now?
9. Equation
Solve the equation: 1/2-2/8 = 1/10; Write the result as a decimal number.
10. Tickets
On the football tournament ticket cost 45 Kc for standing and 120kč for sitting. Sitting spectators was 1/3 more than standing. The organizers collected a total 12 300 Kc. How many seated and standing seats (spectators)?
11. Linear system
Solve this linear system (two linear equations with two unknowns): x+y =36 19x+22y=720
12. Every day 7 pages
Adelka reads the book every day 7 pages. When she reads one more page a day she will read it three days earlier. How long will Adelka read a book? How much does a book of pages have?
13. Two trains
There were 159 freight wagons on the railway station creating 2 trains. One had 15 more wagons than the other. How many wagons did each train have?
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. Spain vs USA
Spain lost to the US by 4 goals. In the match total fell 10 goals. How many goals gave the Spain and how the United States?
16. Bottles
Mrs. Violet brewed 15 l of raspberry juice. She poured it into 17 bottles. Some were 3/4 liter and some one liter. How many was bottles of this two types?
17. Simple equation
Solve for x: 3(x + 2) = x - 18