Let the number of cases solved in 2003 be x. This was 80% of the number of cases, so there were 5x/4 cases to solve in 2003. So the number of cases to solve in 2004 was 5x/4 ×6/5, which is 3x/2. Inspector Remorse solved 60% of the cases, which is 9x/10. So there was a 10% decrease in the number of cases solved.