Question

From 20 miles to 11 miles -find percent decrease.

Answer 1

i think the answer is 9% 

Answer 2

ANSWER

The Percentage decrease is

`45\%`

Step-by-step explanation

The initial value

`20 \: miles`

The final value

`= 11 \: miles`

The percentage decrease can be calculated using the formula,


`Percentage \: decrease \: = (final \: value - inital \: value)/(initial \: value) * 100\%`

We substitute the values to obtain,


`Percentage \: decrease \: = (11 - 20)/(20) * 100\%`

This will simplify to,


`Percentage \: decrease \: = ( - 9)/(1) * 5\%`


`Percentage \: decrease \: = - 45\%`

The negative sign is just there to indicate decrement.

Therefore the percentage decrease is

`45\%`