# Basic functions - math word problems

#### Number of problems found: 2267

• Two numbers
Determine the numbers x and y so x + y = 8 is truth and the numbers are in the ratio of 4: 5.
• Interest
Calculate how much you earn for 10 years 43000 deposit if the interest rate is 1.3% and the interest period is a quarter.
• Volume of sphere
How many times does the volume of a sphere increase if its radius increases 2 ×?
• Five mechanics
Five mechanics will make a car for some time. How many cars can 30 mechanics produce at the same time?
• Geometric sequence 3
In geometric sequence is a8 = 312500; a11= 39062500; sn=1953124. Calculate the first item a1, quotient q and n - number of members by their sum s_n.
• Mushrooms
Mushrooms lose 90% by weight drying. How many fresh mushrooms are needed for 5 kg of dried mushrooms?
• Mixture
How many percentages mixtures do we get by adding 23ml of matter to 89ml of water?
• Rails
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways?
• Number 4
Kamila wrote all natural numbers from 1 to 400 inclusive. How many times did she write the number 4?
• The sum 6
The sum of the 17 different natural numbers is 153. Determine the sum of the two largest ones.
• Combinations
If the number of elements increase by 3, it increases the number of combinations of the second class of these elements 5 times. How many are the elements?
• Donuts
Find how many donuts each student will receive if you share 126 donuts in a ratio of 1:5:8
• Unknown number
Determine the unknown number that is equal to a quarter of the fifth of number, which is by 152 more than unknown number.
• It is rectangular?
Size of two of the angles in a triangle are: α=110°, β=40°. Is it a right triangle?
• Cube into sphere
The cube has brushed a sphere as large as possible. Determine how much percent was the waste.
• Content area and percents
Determine what percentage is smaller cube surface, when the surface area of the wall decreases by 25%.
• Mr Novak
Mr Novak earns an average 1249 euros. When increasing the salary they gave him a choice: ? What is better choice for Mr Novak?
• The Chemistry test
The Chemistry test contained 8 questions, each with 3 points. Peter scored 21 points. How many percent did Peter write a test?
• Sphere in cone
A sphere of radius 3 cm describes a cone with minimum volume. Determine cone dimensions.
• Harmonic mean
If x, y, z form a harmonic progression, then y is the harmonic mean of x and z. Find the harmonic mean of the numbers 6 and 5.

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