Final answer:
To calculate the number of toothbrushes in each shipment, multiply the number of packs (30) by the toothbrushes per pack (6) to get the total toothbrushes (180), and then divide by the number of shipments (3) to find the quantity per shipment (60).
Step-by-step explanation:
To find out how many toothbrushes were in each shipment, we first need to calculate the total number of toothbrushes.
Since there are 30 packs of toothbrushes and each pack contains 6 toothbrushes, we multiply these numbers to get the total amount of toothbrushes, which is 30 packs × 6 toothbrushes per pack = 180 toothbrushes in total.
Next, we divide this total by the number of shipments to find the quantity in each shipment.
There are 3 separate shipments, so we divide 180 toothbrushes by 3 shipments, which gives us 180 toothbrushes ÷ 3 shipments = 60 toothbrushes per shipment.