Required Mathematical Intelligence

Chapter 117 What is the weight in kilograms
The average weight of Xiaodong and Xiaojun is 32kg, the average weight of Xiaohua and Xiaojun is 28kg, the average weight of Xiaodong and Xiaohua is 30kg, what is the average weight of these three classmates?What is the weight of each of the three students in kilograms?
[Answer: (1) The weight of Xiaodong and Xiaojun is: 32×2=64kg
The weight of Xiaohua and Xiaojun is: 28×2=56 kg
The weight of Xiaodong and Xiaohua is: 30×2=60kg
小冬，小军，小华的体重是：（64 56 60）÷2=90千克
The average weight of these three students is: 90÷3=30kg
(2) Xiaodong weight: 90-56=34 kg
Small army weight: 90-60=30 kg
Xiaohua weight: 90-64=26 kg]
(End of this chapter)