40 is 42% of what number? (set this up with a variable,simplify)
0.42x = 40
x = 40/0.42
x = 95.238
42 % = 42 / 100
40 = x * 42 / 100 Multiply both sides by 100
40 * 100 = 42 x
4000 = 42 x Divide both sides by 42
4000 / 42 = x
x = 95.238
OR
42 % = 42 / 100 = 0.42
x = 40 / 0.42 = 95.238
To set up this problem with a variable, let's assume the unknown number is represented by "x". We are given that 40 is 42% of that number, which can be written as:
40 = 0.42x
To simplify, divide both sides of the equation by 0.42:
40 / 0.42 = x
After performing the division, the equation simplifies to:
x ≈ 95.24
Therefore, 40 is approximately 42% of the number 95.24.