Question

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

Answer 1

Answer:

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

Step-by-step 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.

Answer 2

Answer:

5,15

Step-by-step explanation:

let the numbers be x and y

but y = 3x

3x - x = 10

2x = 10

x = 5