Question

a number is twice the other and their sum is 15. find the number​

Answer 1

Answer:

5

Step-by-step explanation:

Let the 1 St number be X

Second number =2X

X+2X=15

3X=15

X=15/3

X=5

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Answer 2

Step-by-step explanation:

let the two numbers be x and y

where x>y

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According to question,

x =2y

Their sum is 15

x + y = 15

we know that x=2y...in place of x we will write 2y

2y + y = 15

3y = 15

y=5

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To find the second number

x = 2y

x = 2(5)

x= 10

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Hence the first number is 5 and the other number is 10