amanda weighs 3/4 as much as er ister. if amanda weighs 129 how musch does her sister weigh? how do you write the equation with x being the sisters weight.
no, amanda weighs 129
.75x = 129
x = 129/.75 = 172
96.75 lbs, Multiply 0.75 x 129
To write the equation with x representing the sister's weight, we can use the given information that Amanda weighs 3/4 as much as the sister.
Let x be the sister's weight.
According to the problem, Amanda weighs 3/4 of the sister's weight, which can be expressed as (3/4)x.
Since it is given that Amanda weighs 129 pounds, we can set up the equation as follows:
(3/4)x = 129
Now, you can solve the equation to find the value of x, which represents the sister's weight.
To write the equation, let's first understand the given information.
We are told that Amanda weighs 3/4 as much as her sister. So, if we let x represent the weight of Amanda's sister, then Amanda's weight can be represented as (3/4)x.
We are also given that Amanda weighs 129 pounds. So we can set up the equation:
(3/4)x = 129
This equation represents the relationship between Amanda's weight and her sister's weight. To solve for x (the weight of Amanda's sister), we need to isolate x on one side of the equation.
Let's solve for x step by step:
1. Multiply both sides of the equation by 4/3 to eliminate the fraction:
(4/3) * (3/4)x = (4/3) * 129
Simplifying, we have:
x = 172
Therefore, Amanda's sister weighs 172 pounds.