Question

a number is doubled and 10 is added to the sum, it is 30
What is the number which was doubled ?

Answer 1

Answer:

10 was doubled

Step-by-step explanation:

because 10+10=20+10=30 so the answer is 10

Answer 2

Answer:

10 is the number

Step-by-step explanation:

Let the number be x

twice of x=2x

10 is added to it

the expression will be 2x+10=30

ATQ,. 2x=30-10

. 2x=20

. x=20/2

. x=10