Question

a number is increased by 25%and then decreased by 20%.find the change in the number​

Answer 1

Answer:

let the number be x.

when increased by 25%, it becomes 1.25x , and when decreased by 20% it becomes 0.8x .

so the change is 1.25x-0.8×= 0.45x.

if the change is expressed as percentage of the original value it 45%