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.
* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.