Xiaoming, Xiaojun, Xiao Fang and Xiaohong make paper cranes together. Xiao Ming only made 7/ 13 of the total number of other three people, Xiao Jun only made 1/3 of the total number of other three people, Xiao Fang only made 1 1/29 of the total number of other three people, and Xiao Hong made 150. How many paper cranes did they make?

Analysis:

According to: Xiao Ming's workload is 7/ 13 of the total workload completed by the other three people.

It is concluded that the number of Xiaoming is 7/20 of the total number.

According to: the number of small soldiers is 65438+ 0/3 of the total number of others.

It is concluded that the number of small soldiers is 65438+ 0/4 of the total number.

According to: Xiao Fang made 1 1/29 of the other three people.

It is concluded that what Xiao Fang does is 1 1/40 of the total.

It is concluded that Xiaohong did1-7/20-1/4-11/40 of the total.

= 15/40

Finally: 150÷ 15/40=400.