To solve:
Total bats on hand: 132
12 bats are sold per week for the next 4 weeks
(12)(4) = 48 bats are sold over the next 4 weeks
Next:
Take the 48 bats and divide by 132 to see how long they will last
132/48 = 2.75
The bats will last 2 months and 3 weeks or 11 weeks.