the total number of pigs, cows, chickens and ducks in a farm is 90; and the total number of their legs is 256. The owner says i have the same number of pigs and cows. chickens and ducks also share the same amount. how many of each kind are there
the total number of pigs, cows, chickens and ducks in a farm is 90; and the total number of their legs is 256. The owner says i have the same number of pigs and cows. chickens and ducks also share the same amount. how many of each kind are there
Mình học bài này tên là Assuming ở Stemhouse nhớ
A pig and a cow have 4 legs each and a chicken and ducks have 2 legs each.
The number of pigs and chickens:
90 : 2 = 45 ( pigs and chickens )
The number of legs of pigs and chickens:
256 : 2 = 128 ( legs )
The number of legs if all of them are chickens:
45 x 2 = 90 ( legs )
The difference between the original and new number:
128 – 90 = 38
The difference between the number of legs a pig has and a chicken has:
4 – 2 = 2 ( legs )
The number of chickens:
38 : 2 = 19 ( chickens )
The number of pigs:
45 – 19 = 26 ( pigs )
Ans: Pigs and cows: 26 each
Chickens and ducks: 19 each
Wow, trùng hợp làm sao là mình đang làm bài này luôn
A pig and a cow have 4 legs each and a chicken and ducks have 2 legs each.
The number of pigs and chickens:
90 : 2 = 45 ( pigs and chickens )
The number of legs of pigs and chickens:
256 : 2 = 128 ( legs )
The number of legs if all of them are chickens:
45 x 2 = 90 ( legs )
The difference between the original and new number:
128 – 90 = 38
The difference between the number of legs a pig has and a chicken has:
4 – 2 = 2 ( legs )
The number of chickens:
38 : 2 = 19 ( chickens )
The number of pigs:
45 – 19 = 26 ( pigs )
Ans: Pigs and cows: 26 each
Chickens and ducks: 19 each