Equations practice problems - page 85 of 241
Number of problems found: 4808
- Calculate 38563
Six equally powerful machines produce 870 parts in 14 hours. Calculate in how many hours 870 parts will have four such machines. - Equation 25
Solve the following simple equation: 3/4(x+5)=1/2(x+9) - The average height
The average height of six friends is 181 cm. Peter came among them, which reduced the average height by 2 cm. Calculate Peter's height. - Solution 38451
Prepare 2 liters (kg) of a 3% salt solution in water. - Solution 38411
Prepare 250g of a 30% solution of hydrogen peroxide in water. - Salicylic 38401
Prepare 600 g of an 8% solution of salicylic acid. - Solution 38391 Prepare 100g of a 15% blue rock solution.
- Lions
If eight lions are 40%, how many would 75% be? - Arm and base
The isosceles triangle has a circumference of 46 cm. If the arm is 5 cm longer than the base, calculate its area. - Motorbike circuit
On a 2,550 m long circuit, two motorcycles go at such speeds that they meet every minute if they go against each other and run every 5 minutes if they go in the same direction. Find their speeds. - Two ports
Two ships commute along the same route between the ports of Mumraj and Zmatek. They spend negligible time in ports, turn around immediately, and continue sailing. At the same time, a blue ship departs from the port of Mumraj, and a green ship departs from - Coloured numbers
Mussel wrote four different natural numbers with colored markers: red, blue, green, and yellow. When the red number is divided by blue, it gets the green number is an incomplete proportion, and yellow represents the remainder after this division. When it - Determine 37931
40% of the base is 1200. Determine what the base is. - Two identical five-digits
We have two identical five-digit numbers, but we don’t know which ones. When we write one before the first, and after the second one, we get two six-digit numbers, one of which is three times the other. What are the numbers? - Squirrels
The squirrels discovered a bush with hazelnuts. The first squirrel plucked one nut, the second squirrel two nuts, and the third squirrel three nuts. Each new squirrel always tore one nut more than the previous squirrel. When they plucked all the nuts from - Interest 37571
We will deposit € 10,500 at the bank at 1.1% interest, and we want to withdraw € 11,000. How many years do we have to wait? Round to 2 decimal places. - Population 37561
The population increased from 29,000 to 31,500 in 5 years. Calculate the average annual population growth in percents. - Parametric equation
Point A [6; -2]. Point B = [-3; 1] Write the parametric equation of the line BA so that t belongs to the closed interval < 0;3 > - Including 37251
The company paid a total of CZK 38,152, including penalties, for the late payment of the invoice. The penalty was 4 ‰. a) how much was the invoiced amount (without penalty)? b) how big was the penalty? - Annual growth The population has grown from 25,000 to 33,600 in 10 years. Calculate what the average annual population growth in% was.
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