Question

2 numbers that subtract to 21 and divide to 4

Answer 1

-3.25

Step-by-step explanation:

first subtract 2from 21 than divided 4 to the answer

Answer 2

Given,

Two numbers subtract to 21, and

divide to 4.

To find,

The numbers.

Solution,

Firstly, let the two numbers be x and y.

Now, it is given that these subtract to 21. So mathematically,

x - y = 21     ...(1)

According to the second condition, the numbers divide to 4. It means on dividing one number by another we should obtain 4. Thus,

$\frac{x}{y} =4$     ...(2)

Now, the two numbers can be found by solving the two equations (1) and (2).

So, from eq. (2), we have,

x = 4y     ...(3)

Substituting this value of x in (1), we get,

(4y) - y = 21

⇒ 3y = 21

⇒ y = 7.

Putting this value in (3),

x = 4y = 4(7)

⇒ x = 28.

Therefore, the two numbers will be 7 and 28.