Question

jadan think of a number.he doubles the number then add 2. the answer is 64. what number did he think of??
a. 13
b.14
c.15
d.16​

Answer 1

Answer :-

• Jadan thought of the number 31.

Given :-

• Jadan thinks of number.
• He doubles it and then adds 2 to the result.
• The answer is 64.

To find :-

• The number he thought of.

Step-by-step explanation :-

Let the number Jadan thought of be x.

He doubled it, so the result = 2x.

He added 2 to the expression, which means that he added 2 to 2x, which is 2x + 2.

The result is 64.

• So, that means 2x + 2 must be equal to 64.

$\sf \implies 2x + 2 = 64$

• Transposing 2 from LHS to RHS, changing it's sign,

$\sf\implies 2x = 64 - 2$

• On simplifying,

$\implies \sf2x = 62$

• Transposing 2 from LHS to RHS, changing it's sign,

$\implies \sf x = \dfrac{62}{2}$

• Dividing 62 by 2,

$\sf\implies x = 31.$

• The value of x = 31.

Hence, the number Jadan thought of was 31.

Therefore, none of the options are correct.