Answer: 600
Step-by-step explanation: Let's first rewrite this problem to say 40% of what number is 240.
To answer the question 40% of what number is 240, we translate the question into an equation. First we have 40% which we need to write as a decimal. To write 40% as a decimal, we move the decimal point 2 places to the left. Filling in the missing position with a zero, we get 0.4.
Next we have "of what number" which means times x, "is 240" equals 240.
Now we have the equation (0.40)(x) = 240.
Now to solve for x, since x is being multiplied by 0.40, we need to divide by 0.40 on both sides of the equation. On the left side of the equation the 0.40's cancel and we have x. On the right side of the equation we have 240 divided by 0.40 which is 600.
This means that x = 600.
This means that 40% of 600 is 250.