0
A farmer has alpacas and emus and has counted 38 heads and 100 legs how many emus and alpacas does he have?
Wiki User
∙ 12y ago
11 emus and 27 alpacas...The correct answer is below:
Let x be the number of alpacas & y the number of emus. Obviously an emu has 2 legs & an alpaca has 4 and both have one head. Now you can create a set of 2 equations with 2 unknowns & solve simultaneously to get the answer.
Number of legs: 4x + 2y = 100
Number of heads total: x + y = 38
4x + 2y = 100
x + y = 38 ---> multiply this equation by 2 & subtract from 1st equation
4x + 2y = 100
2x + 2y = 76
--------------------
2x = 24
x = 12
Substitute x=12 in one of the original equations to solve for y:
12 + y = 38
y = 38 - 12 = 26
So the farmer has 12 alpacas & 26 emu.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Farmer Macleod had some emus and some cows so if a visitor counted 14 heads and 40 legs altogether how many emus are there?
8 emus have 16 legs and 6 cows have 24 legs.
Which large birds that don't fly but when frightened are supposed to bury our heads in sand?
Ostriches and Emus supposedly bury their heads in the sand when frightened, but it is not actually true.
How many feathers does a duck have?
Yes, being birds, emus have feathers which are loose and shaggy.
What is the collective noun for group of emus?
The collective nouns for emus are a mob of emus or an implausibility of emus.
What is a emu called?
Male emus are only referred to as male emus and female emus as female emus.
How do you spell emus?
emus
What are some farm animals?
Some common farm animals are: Cattle (beef and milk), horses, chickens, hogs or pigs. Some less common and becoming more common are: alpacas, emus, ostriches, and various animals from other countries.
Do Emus have pouches?
Emus do not have pouches. They are birds.
Can emus multiply?
no emus are only born by their mama emu in the mama emus eggs and that a( fact!!!!!!!!!!!!
Does Christchurch have emus birds?
Emus are not found naturally in Christchurch, New Zealand. Emus are native to Australia.
How do emus carry food?
Emus do not carry food.
Are Emus good at swimming?
Yes, emus can swim when they have to.
