Equations practice problems - page 122 of 251
Number of problems found: 5001
- Age question
Jano is three times older than Zdeno. Zdeno is 12 years younger than Janko. How old is Jano, and how old is Zdeno? - Two friends
Two friends on a bicycle rode against each other from two places 49 km apart. The first set off at 8.00 at a speed of 20 km/h, the second 12 minutes later at a speed of 25 km/h. What time do they meet? How many km will each of them travel since then? - Athletic club
All athletic club boys lined up by size. In front of Peter was one-eighth of the total. Right behind Peter stood his brother Randy and behind Randy, another five-sixths of the total number of boys. Mark the unknown total number of athletic club boys x. 1, - Sister age ratio
Three sisters have birthdays today, and their ages are in the ratio of 2:3:4. In two years, their ages will be in the ratio of 5:7:9. Find what their ages will be in four years. - Interesting equation solving
Solve an interesting equation: (1 * x) + (2 * x) + (3 * x) + (4 * x) + (5 * x) + (6 * x) = 100 - Touch x-axis
Find the equations of circles that pass through points A (-2; 4) and B (0; 2) and touch the x-axis. - Two parts journey
The driver of the car plans to drive 30 km in 0.5 hours. For 20 minutes he follows the convoy (traffic jam) at a speed of 30 km/h. What speed would he have to go in the remaining time? - School pupil distribution Forty-eight pupils go to school; there are ten boys more than girls. How many girls go to school?
- Bicycle pursuit calculation
The first patrol of the pupils' orientation run started at 8 a.m. at an average speed of 5 km/h. At 8:36 AM, the leader of the orienteering race followed them on a bicycle at a speed of 20 km/h. When and how far from the start will he catch up with them? - Copper sulphate
How much g of water do we have to add to 240 g of an 84% CuSO4 solution to produce a 60% solution? (Express the mass of crystalline CuSO4 in the original solution and the resulting solution and compare them. ) - Sales off
After discounting 40%, the goods cost 15 €. How much did the goods cost before the discount? - The second
The second angle of a triangle is the same size as the first angle. The third angle is 12 degrees larger than the first angle. How large are the angles? - Notebook cover purchase
I need to buy exercise books and covers. One notebook costs CZK 12, and one cover costs CZK 3. I have one fifty crown and one twenty crown. How many notebooks and covers can I buy for it? Come up with more options. - Cyclist meeting calculation The distance between A and B is 132 km. At 9:00, a cyclist set off from A at 24 km/h. At 10:00, a cyclist set off from B at a speed of 30 km/h. How long and for how long will they meet (from A)?
- Prices
The price of the product was increased by 35%. How much percent of the new price do we have to make it cheaper so that its price is equal to the original price? - Eq-frac
Solve the following equation with fractions: h + 1/3 =5/3 - Simple equation 8 Solve the following equation: 36=-(1+7x)-6(-7-x)
- Integer ratio solutions
For which integers x is the ratio (x + 11) / (x + 7) an integer? Find all solutions. - Volume of a tank
A part of the equipment of a city laundry is a water tank. If it is empty, it fills completely with the inlet valve fully open in 24 minutes. If it is full, it empties completely with the outlet valve fully open in 30 minutes. If this outlet valve is full - Price of cake
Honzík invited a few friends to his home and for refreshments he bought, among other things, 30 cakes of three different kinds. The price of one blueberry cake was 8 crowns, one poppy cake cost one crown more than one curd cake. Poppy cakes were a third,
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