Brain Teasers: Two women set out to the market to sell some oranges. Each  had 30 oranges. The first lady sold oranges at 2 for a rupee and second lady sold oranges at 3 for rupee. At last, the first and second lady made Rs 15 and Rs 10 respectively. So the total amount is Rs 25. The next day, when they sold their 30 oranges together to make business profitable, they pooled their sixty oranges and sold at rate of 5 for Rs 2. After they sold all oranges, they found they had only Rs 24. They could not understand where the one rupee went. Where did it go?