Functions - practice problems
In mathematics, a function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. The set of inputs is commonly referred to as the domain, while the set of outputs is referred to as the range.A function is typically represented by an equation that describes the relationship between the input and output. For example, the equation y = 2x + 1 describes a linear function, where y is the output and x is the input. The input (x) can be any real number, and for each value of x, there is a corresponding output (y) given by the equation.
Number of problems found: 6226
- A watch
If a watch is sold at 60 USD, there is a loss of 15%, for a profit of 2%, the watch is to be sold at how many USD? - Two types of ore
A total of 42 tons of two types of ore is to be added into a smelter. The first type contains 6% copper and the other contains 2.5% copper. Find the necessary amounts of each ore to produce 2 tons of copper. - Cu ore An ore contains 5% copper. How much ore is required to obtain 400 grams of copper?
- The Earth and Moon
The diameter of the Moon is approximately 1/4 of the diameter of the Earth. What fraction of the volume of the Earth is the volume of the Moon?
- Salaries - ratio3
The salaries A, B, C are in the ratio 2 : 3 : 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be new ratio of their salaries? - Salary up and down
After reducing the salary of a man by 50%, it is increased by 50%. Find the loss or gain percent. - Division with a remainder
Find the least number which when divided by 8, 12, and 20 leaves a remainder of 5 in each case. - The ratio 21
The ratio between the number of sides of two regular polygon is 1:2 and ratio of sum of their interior angles is 2:3. Find their number of sides. - The ages 3
The ages of A and B are in ratio of 5:4. Three years hence the ratio of their ages will become 11:9. What is the present age of B?
- Subtracting 7
Subtracting 50 from 50% of a number we get 50 as remainder. Find the number. - A man 24 A man distributed 25300 EUR among his 3 sons A, B, C in such a way that the amounts of their parts at 10% simple interest in 2 years, 3 years, 4 years will be equal. A's share?
- Two masons Mason A can build a wall in 30 days, while mason B can build it in 40 days. If they build it together and get a payment of USD 7000, what is B's share?
- 128 USD
128 USD is increased by 20 percentage. Determine the new amount. - Doubling - simple interest A sum becomes its double in 10 years. Find the annual rate of simple interest
- The length 20
The length and breadth of a rectangular park are in the ratio 8:5. A path,1.5 m wide, running all around the outside of the park has an area of 594 sq m. Find the dimensions of the park. - Four numbers 3
What least number must be added to each of the numbers 6,15,20 and 43 to make them proportional? - GP - terms
Which term of the G.P., 2, 8, 32, ... up to n terms is 131072? - Collecting money Rs 180 contained in a box of one rupee, 50 Paise and 25 Paise coins in the ratio 2:3:4. What is the number of 50 Paise coins? (One rupee = 100 paisa)
- Triple the sum At what rate a sum triples in 5 years at simple interest?
A women sold half part of total apples to the 1st customer. Half part of the remaining to the 2nd customer. Then from rest of the apples she sold half part of it to the third customer and again sold half of the remaining apples to the forth customer. Now Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
