Study the table and answer the question that follows.
What was the percentage increase in the height of the child from the 7th birthday to the 10th birthday?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 20%.
The height of the child on their 7th birthday = 120
The height of the child on their 10th birthday = 150
The percentage increase in the height of the child from the 7th birthday to the 10th birthday = 30/150 × 100 = 20%