Question

Amit thinks of a number, doubles it and adds 50 to the answer. He gets the answer 120. What was Amit's original number?

Answer 1

Step-by-step explanation:

We used to do these kind of tricks as a kid to amaze other kids in the school.

(Apne man me ek number le lo; Utna hi apne dost se le lo; Mere taraf se 10 le lo; sab ko add karke half donate kar do; dost ka paisa wapas kar do; 5 bacha. Waah!)

(You take a number, take the same amount from your friend, I am giving you 10; add all these and donate half; return the money taken from friend; 5 is left. Isn’t it?

It happens because this mathematical puzzle is independent of the number you chose. It is only dependent on the amount you added (six in this case). Final result is half of the amount you added.

So, now I am applying the conditions put in the question to prove my statement.

Let the number to be “x”.

Now, I’m doubling it and adding six so it becomes 2x +6

Now, I’m dividing it by half so it becomes x +3

Now, I’m subtracting the number from which I started; so x + 3 - x = 3

See, we got the answer 3 as all the operations are designed in a way that the end result is independent of the number we chose.

Answer 2

Step-by-step explanation:

Let x= the number

So according to given conditions

2x= 120+50

x= 170/2

x= 85

IT IS EASY QUESTION OR YOU CAN FOLLOW ME FOR DOUBTS. . .