To calculate the number of bottles needed for a 10-day supply of medication:
First, determine the total number of tablets needed for 10 days:
2 tablets x 3 times per day x 10 days = 60 tablets
Since each bottle contains 16 tablets, divide the total number of tablets needed by the number of tablets per bottle:
60 tablets ÷ 16 tablets per bottle ≈ 3.75
Since we can't have a fraction of a bottle, we need to round up to the nearest whole number to ensure we have enough medication:
Number of bottles needed = 4 bottles
Therefore, you would need to purchase 4 bottles to have enough medication for a 10-day supply.