Let's try to get something that would work for just 5 for now. Any of these numbers would leave a remainder of 1 when divided by just 5: 6, 11, 16, 21, 26, 31, 36, 41, 46, 51, 56, 61, 66, 71, 76, 81, 86, ... Notice that they all look like 5*(something) + 1. Basically, they are all multiples of 5 plus 1.
Let's see what would work for just 8: 9, 17, 25, 33, 41, 49, 57, 65, 73, 81, 89, ...
Are there any matches... AHA! It's 81. This is the lowest positive integer greater than 1 that follows the rule for both 5 and 8.
Boy record = 25 feet 8 inches Girl record = 19 feet 19 inches Boy record / Girl record = 25 feet 8 inches / 19 feet 19 inches Change the feet into inches 1 feet = 12 inches 25 feet = 25* 12 = 300 inches + 8 inches = 308 inches
19 feet = 19 * 12= 228 inches + 19 inches = 247 inches Boy record / Girl record = 308 inches / 247 inches Boy record / Girl record = 1.246 inches Boy record = 1.246 Girl record So it is 1.246 times greater than girls record.