Question

A positive number is 5 times another numbers.if 21 is
added to both the numbers, then one of the new numbers
becomes twice the other new number. what are the
numbers ?​

Answer 1

Answer:

7,35

Step-by-step explanation:

Let the numbers be x,y

⟹y = 5x

21 is added 

The numbers are 

y+21,x+21

According to question 

y+21=2(x+21)

5x+21=2x+42

5x=2x+21

3x=21

x=7⟹y=35

Hope it will help you.

Answer 2

Step-by-step explanation:

numbers a,b say

a=5b

a+21=2(5b+21)

5b+21=10b+42

5b=-21

b=-21/5

a = -21/5 * 5 = -21