Donnie and Ronnie are trying to figure out how much they weigh in kilograms. They discovered that 1 kg equals 2.2 pounds. Donnie weighs 188 pounds. Ronnie weighs 165 pounds. What is the difference in their weight in kilograms round to the nearest hundredth.

Answer 1

To convert Donnie's weight to kilograms, we divide 188 by 2.2: 188 pounds / 2.2 pounds/kg = <<188/2.2=85.45>>85.45 kg
To convert Ronnie's weight to kilograms, we divide 165 by 2.2: 165 pounds / 2.2 pounds/kg = <<165/2.2=75>>75 kg
To find the difference in their weight, we subtract Ronnie's weight in kilograms from Donnie's weight in kilograms: 85.45 kg - 75 kg = <<85.45-75=10.45>>10.45 kg
We round to the nearest hundredth, which gives us 10.45 kg. Answer: \boxed{10.45}.