Question

came equations for the following
A number is 4 times another number. Their sum is 30​

Answer 1

Answer:

let the first number be X

and second number be Y

According to the given condition,

X=4Y-(i)

X+Y=30-(ii)

now,

X+Y=30

4Y+Y=30-(from 1)

5Y=30

Y=30/5

Y=6

put Y=6 in equation 2

X+Y=30

X+6=30

X=30-6

X=24