Giraffe 2

The lifespan of a guinea pig is six years less than that of a giraffe. The lifespan of a tiger is four times that of a guinea pig. If the total lifespan of the animals is 30 years, calculate the longevity of the giraffe.

Correct answer:

g =  10

Step-by-step explanation:


p=g-6
t=4p
t+p+g=30

p=g-6
t=4·p
t+p+g=30

g-p = 6
4p-t = 0
g+p+t = 30

Row 3 - Row 1 → Row 3
g-p = 6
4p-t = 0
2p+t = 24

Row 3 - 2/4 · Row 2 → Row 3
g-p = 6
4p-t = 0
1.5t = 24


t = 24/1.5 = 16
p = 0+t/4 = 0+16/4 = 4
g = 6+p = 6+4 = 10

g = 10
p = 4
t = 16

Our linear equations calculator calculates it.



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Do you have a system of equations and looking for calculator system of linear equations?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Grade of the word problem:

Related math problems and questions: