x + y = 100

if y is 10 percent of x solve for x and y

asked by guest
on Mar 22, 2025 at 1:44 am



You asked:

Given x+y=100 x + y = 100 , y=10100x y = \frac{10}{100} x , evaluate x x , y y .

MathBot Answer:

The system of linear equations has exactly one solution.

x=100011x = \frac{1000}{11}

y=10011y = \frac{100}{11}


Solve x+y=100x + y = 100 for xx. x=100yx = 100 - y

Substitute 100y100 - y for xx in y=x10y = \frac{x}{10} and simplify. y=x10y=(100y)10y=10011\begin{aligned}y &= \frac{x}{10} \\ y &= \frac{\left(100 - y\right)}{10} \\ y &= \frac{100}{11} \end{aligned}

Use substitution of the numerical value of yy to get the values of xx. x=100yx=10010011x=100011\begin{aligned}x &= 100 - y \\ x &= 100 - \frac{100}{11} \\ x &= \frac{1000}{11}\end{aligned}