Question 1
During the Naadam festival, three warriors namely Andy, Ben and Charlie, competed in a $1$ km horse race across the vast Mongolian grasslands. Each of their horses ran at a constant speed throughout the race. When Andy crossed the finish line, Ben was $40$ meters behind him. When Ben crossed the finish line, Charlie was $25$ meters behind him. How many meters behind Andy was Charlie at the exact moment Andy crossed the finish line?
