Answer:
90 bats
Step-by-step explanation:
Susan averages 18 hits for every 45 times at bat
Average = 18/45
Let the number of bats when she makes 36 hits be x
Average = 36/x
Since she maintains the same average
18/45 = 36/x
Cross multiply
18x = 36(45)
18x = 1620
x = 1620/18
x = 90
She will need 90 bats in order to get 36 hits