Answer:
The age of Jenny's mom is 40 % of age of Jenny's great-grandmother. (Input: 40)
Step-by-step explanation:
The percentage needed is calculated by the following expression:

Where:
- Percentage of Jenny's mother with respect to Jenny's great-grandmother, measured in percentage.
- Age of Jenny's mother, measured in years.
- Age of Jenny's great-grandmother, measured in years.
If we know that
and
, the percentage is:


The age of Jenny's mom is 40 % of age of Jenny's great-grandmother.
Answer: 3/4 x 48
3 x 12
= 36
Got 12 by reducing the numbers with the Greatest Common Factor (GCF) 4
Ten thousand-80000
hundred-81100
ten-81070
thousands-81000