Question

A number is three times another number. The difference of these two numbers is 10. Find these number.​

Answer 1

5,15

Explanation:

let the numbers be x and y

but y = 3x

3x - x = 10

2x = 10

x = 5

Answer 2

`\Large \boxed{\sf 15 \ and \ 5}`

Explanation:

Let the first number be x.

Let the second number be y.

x is 3 times y.

Difference of x and y is 10.

`x=3y`

`x-y=10`

Put x as 3y in the second equation.

`3y-y=10`

Combine like terms.

`2y=10`

Divide both sides by 2.

`y=5`

Plug y as 5 in the first equation.

`x=3(5)`

Multiply.

`x=15`

The two numbers are 15 and 5.