# Unknown number 7

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

Correct result:

n =  25

#### Solution:

16/100 n = n - 21

16/100•n = n - 21

84n = 2100

n = 25

Our simple equation calculator calculates it.

We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you!

Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

## Next similar math problems:

• Unknown number
15% of the unknown number is 18 less than 21% of the same number. What is the unknown number?
• Percentage reduction
Reducing the unknown number by 19% get number 700.7 Determine unknown number.
• 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.
• Unknown number 24
f we add 20, we get 50% of its triple. What is this unknown number?
• 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?
• Unknown number 7
Calculate unknown number whose 12th power when divided by the 9th power get a number 27 times greater than the unknown number. Determine the unknown number.
• Finding the base
Find the unknown base of percent: 12.5 percent of what = 16?
• Positive number z
Positive number z is 10% greater than the number y. How many % is y smaller than z? Report the result rounded to one decimal place.
• Reducing number
Reducing the an unknown number by 28.5% we get number 243.1. Determine unknown number.
• Unknown number x
5% from an unknown number equals the number 26. What is the unknown number?
• Unknown number 10
Number first increased by 30%, then by 1/5. What percentage we've increased the original number?
• If we
If we increase the unknown number by 4%, we get 780. Determine the 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?
• Number
What number is 20 % smaller than the number 198?
• The number 72
The number 72 increase by 25%. By how much % will you have to reduce the number you created to get the number 72 again?
• Percent
Calculate how many % is the number 26.25 less than the number 105.
• Numbers
Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum?