Question

1.My brother is 2 years younger than I.My sister is 4 years younger than my brother.my mother wa...

1.My brother is 2 years younger than I.My sister is 4 years younger than my brother.my mother was20 years old when was
(1/4)接上：born.In this year the average age of us is 38.Can you tell me ho(2/4)w old each of us is? 2.Why is room full of married people empty?

Answer 1

答案
妈妈比“我”大20，比弟大20+2=22，比妹大20+4=24
则妈妈今年
（38x4+20+22+24）÷4=54.5岁

“我”
54.5-20=34.5岁
“弟”
54.5-22=32.5岁
“妹”
54.5-24=30.5岁

Answer 2

1 i=35 brother=33 sister=29 mother=55
2 Because there is not a single person in it (single有单身的意思 还有一个的意思）