System of equations - practice problems - page 7 of 107
Number of problems found: 2125
- Tables and chairs
The cost of 4 tables and 3 chairs is $225, and 3 tables and 4 chairs cost $195. Find the cost of 2 chairs and 1 table. - The sum 35
The sum of the two numbers is -20. One number is 3 more than the other one. Find the numbers. - Rupees
Seventy coins of rs 10 and rs 50 are kept in a purse. Suppose the total value of the money in the purse is RS.1900. find the number of each type of coin. - Find all 2
Find all the complex solutions (write the answer in the form x+iy) of the system. {|z-12|/|z-8i|=5/3 ; |z-4|=|z-8| - Math class
There are a total of 30 students in a math class. The number of boys is 2 more than 3 times the number of girls. How many boys are in this math class? - The temperature 38
The temperature has been dropping 2 degrees every hour, and the temperature at 10:00 AM was -15 degrees Fahrenheit. At what time was the temperature 0 degrees Fahrenheit? - Three 222
Three tractor drivers working on a private farm together played 24 hectares of land in a shift. The first drive played half the second, and the second 4 hectares more than the third. Calculate the number of hectares played by the first, second and third.
- The perimeter 10
The perimeter of a rectangle is 162 inches. The length is 35 inches longer than the width. Find the length and width of the rectangle. - The masses
The masses of a mother and a daughter differ by 30kg and are in the ratio of 8:5. Find the mass of each. - The sum 31
The sum of two fractions is 13 3/4. Their difference is 8 1/5. What are fractions? - The sum 30 The sum of 8 times a number and 5 times another number is 184. The first number minus the second number is -3. What are the numbers?
- Length and width
The length of a rectangle is 7 cm more than the width. Find the width and length if the perimeter of the rectangle is 78 cm. - John and Thomas
John and Thomas received 105 CZK from their grandmother together. John received one third more than Thomas. How many CZK did Thomas receive less than John? - Grass Mixture
Peter plans to buy a grass mixture consisting of meadow grass and fescue seeds for 40 euros. 1 kg of meadow grass costs 6 euros and 1 kg of fescue costs 10 euros. How much of each component should he buy if the resulting mixture is to weigh 6 kg? - Waffle, bar
Jarmila bought a wafer, a bar, and a chocolate bar. She paid 38 Sk. The bar was 8 Sk more expensive than the wafer, and the chocolate bar was four times more expensive than the wafer. How much did the wafer, bar, and chocolate bar cost?
- GP - free
For a geometric sequence, an interesting relationship between the first and third terms applies: a1-a3=-1.5 a3-a1=1.5 Calculate the quotient q and the first term a1. - Wands - Wizard
The number promised the wizard Rhododendron that she would teach him a lot about numbers, but he must solve her riddle: My two magic wands measure 63 cm together. One is 7 cm longer. How long are her wands? - Me and my father
My father and I are now 55 years old together. When we are 65 years old together, my father will be four times older than me. How old am I? - Daniel 3 Daniel and Eva earned 180 euros together. Daniel earned 70 euros more than Eva. How much did Daniel earn, and how much did Eva earn?
- Three friends 10 Three friends Peter, Tomáš and Jirka earned 4000 CZK working part-time. Peter earned three times more than Tomáš and Jirka earned 500 CZK more than Tomáš. How much did each of them earn?
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