# Unknown number

15% of the unknown number is 18 less than 21% of the same number. What is the unknown number?

### Correct answer:

Tips to related online calculators

Our percentage calculator will help you quickly calculate various typical tasks with percentages.

Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

#### You need to know the following knowledge to solve this word math problem:

## Related math problems and questions:

- Energy saving

They were released three different, independent inventions saving 20%, 24% and 15% energy. Some considered that while the use of these inventions, the total savings will be 20% + 24% + 15% = 59%. Is this true? How much percent of energy will save all thre - Unknown number 7

16% of the unknown number is by 21 less than unknown number itself. Determine the natural unknown number. - Cinema tickets

Cinema sold 180 tickets this Thursday, which is 20%. Monday 14%, Tuesday 6%, Wednesday 9%, Friday 24%, Saturday 12%, and Sunday 15%. How many tickets were sold per week? - Unknown number x

5% from an unknown number equals the number 2^{6}. What is the unknown number? - Speed of Slovakian trains

Rudolf decided to take the train from the station 'Ostratice' to 'Horné Ozorovce'. In the train timetables found train Os 5409 : km 0 Chynorany 15:17 5 Ostratice 15:23 15:23 8 Rybany 15:27 15:27 10 Dolné Naštice 15:31 15:31 14 Bánovce nad Bebravou 15:35 1 - 3 years

The company has increased the number of employees. In year 2005 compared to 2004 13% more, in 2006 18% more against the previous year, in year 2007 20% more compared to 2006. How many % increase in the number of employees in 3 years? - Reducing number

Reducing the an unknown number by 28.5% we get number 243.1. Determine unknown number. - Unknown number 24

f we add 20, we get 50% of its triple. What is this unknown number? - If we

If we increase the unknown number by 4%, we get 780. Determine the unknown number. - Four numbers

The first number is 50% second, the second number is 40% third, the third number is 20% of the fourth. The sum is 396. What are the numbers? - 15% of

15% of the revenue from sales was CZK 24,000 and it had to be written off as sales tax. What was the net profit on sales? - Unknown number 5

I think of an unknown number. If we enlarge it five times then subtract 3 and the result decreases by 75% we get one greater than the number. What number am I thinking of? - Crowns

1180 crowns are divided into three people: A got 20% less than B and C by 15% more than B. How many got A, B, and C? - Sum of three numbers

The sum of three numbers from which second number is 20% smaller than the first number and the third number is 25% smaller than the second number is 96. Determine this numbers. - Unions now

The plant has 1,250 employees. The Trade Unions (former ROH, OH) is 18% male, 23% female. Plant management reported that in the trade union is 20% of all employees. How many men and women are in the plant, and how many are men and women in trade unions? - School year

At the end of the school year has awarded 20% of the 250 children who attend school. Awat got 18% boys and 23% of girls. Determine how many boys and how many girls attend school. - CuSO4 mixture

How many grams of solid CuSO4 we have to add to 450g of 15% CuSO4 solution to produce a 25% solution?