Answer:
The minimum number of packages each must have shipped is 198.
Step-by-step explanation:
Sarah's trucks will only carry loads of 18 packages.
Ryan's trucks will only carry loads of 11 packages.
To find the minimum number of packages each must have shipped, we will find the LCM.
18 = 2 x 3 x 3
11 = 11 x 1
LCM = 18 x 11 = 198
Hence, the minimum number of packages each must have shipped is 198.