What is x when 21 divided by x equals 91?
In other words, what would the divisor be if the dividend were 21 and the quotient 91?
To find the answer, just divide the dividend by the quotient: 21 ÷ 91 = 0.23076923076923
To prove this, let's compute 21 divided by 0.23076923076923:
How does it work?
Asking what the value of x could be when 21 divided by x gives a result of 91, is equivalent to solving the following equation:
- Multiply both sides by x:
- is equivalent to , which simplifies to (or just ).
- Thus, the equation becomes:
- To find x, divide both sides by 91:
- Which gives, after simplification: (or )
So, if the dividend is 21 and the quotient is 91, the divisor is 0.23076923076923.