Rearrange variables - math word problems - page 128 of 145

Number of problems found: 2899

Unknown number 7
16% of the unknown number is 21 less than the unknown number itself. Determine the unknown natural number.
Three children
Three children eat eight chocolates in 6 days. How many chocolates do six children eat in 18 days?
Exponent value
Determine what z equals in the expression 169^z = 2 · 6.5
Exponent equation
What is the solution of the equation: 2^x = 2/64
Geometric progression
Determine the second term and the quotient GP if a3 = 48.6 a1 + a2 = 6
Work time
Josef would do the work himself in 5 hours. Josef and Michal would do the work together in 3.5 hours. Determine how long it would take Michal to do the job independently.
Number difference
The difference between the two numbers is 16. They are natural numbers. The first number is 17 times larger than the second number. Identify both of these numbers.
Unknown number 5
Daniel thinks of an integer. When he changed this number to a ratio of 2:5, he got the number 2.8. Determine what number Daniel thinks.
Raspberries
Dano had 20 raspberries, and John had 90% more raspberries than Dano. Find the total number of raspberries Dano and Juraj have together.
Rectangle
The perimeter of a rectangle is 48 cm. Calculate its dimensions if they are in the ratio 5:3 (width: height)
Price saleoff
Shoes cost y euros. They were first discounted by 12% and then 50% of the new amount. After this double discount, the cost was exactly 22 euros. Determine the original price of the shoes.
Coefficient
Determine the coefficient of this sequence: 7.2; 2.4; 0.8
Number puzzle
Anton said: I have a natural number x. I'll get three times as much if I increase it to four-thirds. What number did Anton mean?
Work time
Michal would cut the fence himself in 12 hours. It would take Michal and Juraj 8 hours together. Determine how long it would take for Juraj to do the job.
Lighthouse
The man, 180 cm tall, walks along the seafront directly to the lighthouse. The male shadow caused by the beacon light is initially 5.4 meters long. When the man approaches the lighthouse by 90 meters, its shadow is shorter by 3 meters. How tall is the lig
Exponent equation
Determine the value of x: 2^x = (2^-3): 2
Exponent value
Find z if 12^z = 1/144
Square root puzzle
Find a natural number whose square root is 27 times its square root.
Tetrahedral prism
Calculate the area and volume of a tetrahedral prism that has a base rhomboid shape, and its dimensions are: a = 12 cm, b = 70 mm, v_a = 6 cm, v_h = 1 dm.
Volume and area
What is a cube's volume with an area of 361 cm²?

Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.