Question

Which of the following represents the greatest percent of change?

a) A tree grew from 6 feet to 12 feet in 1 year.
b) An aquarium that was originally priced at $80 is now $60.
c) A person whose salary was $100 per week is now earning $120 per week.
d) A baby who weighed 7 pounds at birth now weighs 16 pounds

Answer 1

To determine the greatest percent of change, calculate the percentage change for each option and compare. The baby's weight increased by approximately 128.57%, making it the greatest percent of change.

Step-by-step explanation:

To determine the greatest percent of change, we need to calculate the percentage change for each option.

a) The tree grew from 6 feet to 12 feet, which is a change of 12 - 6 = 6 feet. The percent of change is (6/6) * 100 = 100%.

b) The aquarium's price decreased from $80 to $60, which is a change of 80 - 60 = $20. The percent of change is (20/80) * 100 = 25%.

c) The person's salary increased from $100 to $120, which is a change of 120 - 100 = $20. The percent of change is (20/100) * 100 = 20%.

d) The baby's weight increased from 7 pounds to 16 pounds, which is a change of 16 - 7 = 9 pounds. The percent of change is (9/7) * 100 ≈ 128.57%.

Therefore, the greatest percent of change is option d) where the baby's weight increased by approximately 128.57%.