Answer :
The height of Jack based on the information is 50 inches.
What is percentage?
A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100.
Let the height be represented as h.
Therefore, Jack can jump 195% of his height with a running start. This will be:
= 195% × h = 9.75
1.95h = 97.5
Divide
h = 97.5 / 1.95
h = 50
Jack is 50 inches tall.
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