Question

Two times a number is 100% increase in the number.If we take half the number what would be the decrease in present

Answer 1

Answer:

Decrease in present = 50%

Step-by-step explanation:

Let the number be x,

half of the number = x/2

decrease percent = number - half of the number x 100 / number  

                              = x - x/2 x 100 / x

                              =2x - x/2 x 100 / x [ taking lcm ]

                              = x / 2 x 100 x 1 / x[ cancelling x]

                              = 1/2 x 100

                              = 50 %