Question

of two numbers the first number is 5 times the second find 21 is added to each number the first number becomes two times the second number find the numbers ​

Answer 1

Answer:

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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

Answer 2

Step-by-step explanation:

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Let the first number is x and second is y

Given twice of first added with second gives 21

∴2x+y=21 ...(1)

∴2x+y=21 ...(1)And given twice of second added with first gives 27

∴x+2y=27 ...(2)

Multiply (1) by 2

Then 4x+2y=42 ...(3)

Subtract (3) with (2)

Then 3x=15

Or x=5

Put the value of x=5 in (1)

Then 10+y=21

Or y=21−10

Or y=11

Then first number is 5 and second is 11.

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