Xiao Ming, Xiao Li and Xiao Lu all like collecting stamps. Xiao Ming: we each have 45 stamps on average. Xiao Li: how many stamps do we each have? Xiao Lu: the number of stamps for me, Xiao Ming and Xiao Li is 5:7:3

Xiao Ming, Xiao Li and Xiao Lu all like collecting stamps. Xiao Ming: we each have 45 stamps on average. Xiao Li: how many stamps do we each have? Xiao Lu: the number of stamps for me, Xiao Ming and Xiao Li is 5:7:3

Xiaoming, Xiaoli and Xiaolu have 45 stamps per person on average. A total of 45 x 3 = 135 stamps
Xiao Lu: the ratio of the number of stamps for me, Xiao Ming and Xiao Li is 5:7:3
5: 7:3: 5 + 7 + 3 = 15
5 / 15 = lane. 7 / 15 = Xiao Ming. 3 / 15 = Xiao Li
135 x 5 / 15 = 45 Lane 135 x 7 / 15 = 63 Xiaoming 135 x 3 / 15 = 27 Xiaoli
Or make an equation: just like the answer upstairs
.
.