sixty-four is four tenths of what number?
0.4x = 64
x = 64/0.4
x = 160
wow this is realllyyyy smart, good job smart teachers!!
To find the number that sixty-four is four tenths of, we can use a simple mathematical equation. Let's assume the number we are looking for is "x". We know that "x" multiplied by four tenths should equal sixty-four.
Mathematically, we can express this as:
4/10 * x = 64
To solve for "x," we'll divide both sides of the equation by four tenths (which is equivalent to dividing by 0.4):
(4/10 * x) / (4/10) = 64 / (4/10)
Simplifying, we get:
x = 64 / (4/10)
Now, we can divide 64 by 4/10:
x = 64 ÷ (4/10)
To divide by a fraction, we can multiply by its reciprocal:
x = 64 × (10/4)
Multiplying:
x = 640/4
Simplifying the fraction:
x = 160
Therefore, sixty-four is four tenths of one hundred sixty.
To find the number, we can set up a proportion.
Let's denote the unknown number as "x".
We know that sixty-four is four tenths of x.
Mathematically, this can be written as:
64 = (4/10) * x
To solve for x, we'll start by simplifying the fraction on the right side of the equation:
64 = (2/5) * x
To get rid of the fraction, we can multiply both sides of the equation by the reciprocal of (2/5), which is 5/2:
64 * (5/2) = x
Now, we can simplify the equation:
(64 * 5) / 2 = x
320 / 2 = x
160 = x
Therefore, sixty-four is four tenths of the number 160.