Calculate the percentage that the obtained number is from the original number when [[$ 30% $]] is added to the number first and then

a) [[$ 40 \% $]] is subtracted of it.



Answer: The obtained number is [[$ \% $]] of the original number.

b) [[$ 30 \% $]] is subtracted of it.



Answer: The obtained number is [[$ \% $]] of the original number.

c) [[$ 10 \% $]] is added to it.



Answer: The obtained number is [[$ \% $]] of the original number.

d) [[$ 50 \% $]] is added to it.



Answer: The obtained number is [[$ \% $]] of the original number.