Be active and find the killer in the picture Riddle below.

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

Using eight eights and addition only, can you make 1000?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

How far can you walk into the woods?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

A father's child, a mother's child, yet no one's son.

Who am I?