Answer:
2.75h + 122.5, where h = lifespan of a horse
Step-by-step explanation:
The whale's lifespan is given in terms of the stork's.
The stork's lifespan is given in terms of the horse's.
Start by assuming a variable for the lifespan of a horse.
Let h = the lifespan of horse in years.
A horse lives h years.
A stork lives 70 years longer than a horse. A stork lives h + 70 years.
A whale lives 3/4 of the lifespan of a stork. A whale lives for (3/4)(h + 70) years.
Now that you have an expression for the lifespan of each animal, the total lifespan of the three animals is the sum of the three lifespans.
total lifespan = h + h + 70 + (3/4)(h + 70
Now we simplify the right side.
total lifespan = 2h + 70 + (3/4)h + (3/4)(70)
total lifespan = 2h + 70 + 0.75h + 52.5
total lifespan = 2.75h + 122.5
Answer: 2.75h + 122.5, where h = lifespan of a horse
