Fifteen percent of a number is 10.5. What is the number?
To find the number, you need to divide 10.5 by 15% (or 0.15), as 15% of a number is equal to 0.15 times the number.
So, to find the number:
Number = 10.5 / 0.15 = 70
To find the number, we can set up an equation using the information given.
Let's assume the number is represented by 'x'.
The phrase "Fifteen percent of a number" can be expressed as 15% of x, which is written as 0.15x.
According to the problem, "Fifteen percent of a number is 10.5", we can now write the equation:
0.15x = 10.5
To find the value of x, we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 0.15:
(0.15x) / 0.15 = 10.5 / 0.15
This simplifies to:
x = 10.5 / 0.15
Evaluating the division:
x = 70
Hence, the number is 70.
0.15x = 10.5
x = 10.5/0.15
x = 70