Question

I have a Another Question...
which is : SO i am confused in this one pls help...

I think of a number, add 4 and then double. The answer is 30. What number did
I think of ? ___________

Answer 1

Question :

I think of a number, add 4 and then double. The answer is 30. What number did I think of ? ___________

Answer :

$\sf\pink{Explanation}$

• let the number be "x"

By the given condition ,

( x + 4 ) × 2 = 30

$\\ \longrightarrow\sf{️2x + 8 = 30 }$

$\\ \longrightarrow\sf{️2x = 30 - 8 }$

$\\ \longrightarrow\sf{️2x = 22 }$

$\\ \longrightarrow\sf{️x = \dfrac{22}{2}}$

$\\ \longrightarrow\sf{️ x = 11}$

Therefore the number is 11 .