Question

[Đinh Đức Tài]

Thirty-six dogs and chickens are cooped together.
There are one hundred legs altogether.
How many are there in each group?

League with 3 different ways

Answer 1

[Nguyễn Nam Cao]

Assuming each dog just stood by 2 legs and forelegs up co 2. Then, each dog has only two legs and one can see 36 children are chickens.
At this time, 36 children have: 2 x 36 = 72 (feet)
The number of co leg up will be: 100-72 = 28 (feet)
The number of dogs is 28: 2 = 14 (chicken)
The number of chickens is: 36-14 = 22 (chicken)

Answer 2

[Itsuka Hiro]

Nguyễn Nam Cao children ở đâu ra?