# System of equations - 7th grade (12y) - math problems

#### Number of problems found: 177

- Simple equations

Solve system of equations: 5x+3y=5 5x+7y=25 - Two numbers

Find two numbers whose difference and ratio is 2. - Pair

They have together 39 years - he has 2 times as she was when he was equal as she has today .... - Have solution

The sum of four consecutive even numbers is 92. Determine these numbers. - Grandfather and grandmother

The old mother is 5 years younger than the old father. Together they are 153 years old. How many years has each of them? - Number ratio

Calculate two positive numbers that its ratio is 6:6 and difference was 0. - Product

The sum and the product of three integers is 6. Write largest of them. - Purchase

Three buyers pay € 468. The first paid 3-times more than second, third half over second. How many euros paid each of them? - Hostel

Students are accommodated in 22 rooms. Rooms were 4 and 6 bed. How many rooms in which type occupied 106 children there? - Two numbers

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

The sum of two numbers is 1. Identify this two numbers if you know that the half of first is equal to the third of second number. - Flowerbed

Ondra digs the bed in 20 minutes. Cuba in 30 minutes. For how long do they dig together? - Saving

Paul save 155Kč in 46 2 Kc and 5Kc coins. How much saved 2Kc and 5Kc coins? - Ratio

6 numbers are in the ratio 1:5:1:5:5:5. Their sum is 242. What are the numbers? - Algebrogram

Solve algebrogram: mama+anna=vari How many solutions are? - 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? - Three friends

Divide 570 euros to three friends so that first will get 50 euros less than the second and third twice more than the first. How many euros will get everyone? - Addends

Number 118 divide into two addends, so first addend is 69 greater than 75% of the second addend. - Three men

Alex is half younger than Jan, which is one-third younger than George. The sum of their ages is 48. How are these three men old? - Blueberries

Miko and Anton have a total of 1,580 blueberries. Miko and Anton have them in the ratio 2: 3. Determine how much each of them has.

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