Answer:
22.5%
Step-by-step explanation:
Let the starting amount be x
Recorded below is the amount after:
0 days = x
1 day = x + (7% of x) = 1.07x
2 days = 1.07x + (7% of 1.07x) = 1.1449x
3 days = 1.1449x + (7% of 1.1449) = 1.225x
so by the third day, the total amount is 1.225 times the starting amount(x) or 122.5% meaning it grew by 22.5% in three days.
