Answer: 144.28 centimeters
Step-by-step explanation:
The height of Louisa = 152.7 centimeters
The difference in Louisa and her younger sister = 8.42 centimeters
Therefore, the height of her younger sister = centimeters
Thus, the height of her younger sister = 144.28 centimeters
Hence, Louisa's younger sister is 144.28 centimeters tall.
In order to find out 50% of 84. You take 84 and multiply it by .50 and then the answer ris 42.