In one of the pens, put two cows.
If a farmer starts with 13 cows and all but 9 die, he would have 9 cows left. The phrase "all but 9" means everything except 9. So, if all the cows except 9 die, those 9 remaining cows are what the farmer has left.
he has 9
The farmer has eight cows, since all but that many died.
Nine.
10 Cows. Ten. He Decided to Keep 10 cows, so that is how many he has. He must have had 19 to begin with; since he gave 9 away.
Eat onr
eat 5 sheep
In 4 boxes there are a total of 48 pens. Divide 48 by 4 and this will give you how many pens are in 1 box. 48/4 = 12. To find how many pens are in 9 boxes multiply 12 by 9. 12x9 = 108. There are 108 pens in 12 boxes
9 live and the rest die look at the question carefully and you'll find the answer.
108
No. The sum of four odd numbers will always be an even number!
The black cows are the better milkers because the amount of milk they produced per cow is greater than that from the brown cows. This is a simple algebra problem. Let x = black cow and y = brown cow, solving as such: 4x = 5 3x = 4 3y = 5 5y = 4 4x + 3x = 9 7x = 9 x = 9/7 = 1.29 units per black cow 3y + 5y = 9 8y = 9 y = 9/8 = 1.13 units per brown cow