Question

X scores 15 marks more the y in maths .if the sum of their mark in maths is 275 . find the marks obtained by each

Answer 1

Answer:

$x=145$, $y=130$.

Step-by-step explanation:

$x=y+15$

$x+y=275$

Let's solve this set of equations.

First, substitute $x$ in equation 2 with $x=y+15$.

We will then get $y+15+y=275$.

Subtract 15 on both sides:

$y+y=260$

Simplify:

$2y=260$

Divide both sides by 2:

$y=130$

To find $x$, take $130+15$ because we know that $x=y+15$.

$x=130+15$

$x=145$