5 because if you subtract 13 from 18 you will get five and might be her avrage
Answer: 7.25 inches
I think, I hoped this helped
Okay, so the first thing we have to do is take 6ft and convert it into inches so we get the equation (6x12)+6 6 times 12 is 72 so that gives us 72in plus 6 which is 78 and with that answer we take 78in and divide it by 6.17 which is 12.18. She has a long arm measuring i while feet and 18 inches lol
12 - all divisible by it (2*12=24, 3*12=36, 12*5=60)