Final answer:
By dividing the total amount of fertilizer (4 kg) by the number of weeks (5), we can determine that the gardener used 0.8 kilograms of fertilizer each week.
Step-by-step explanation:
To find out how much fertilizer the gardener used each week, you divide the total amount of fertilizer used by the number of weeks. The gardener used 4 kilograms of fertilizer over 5 weeks, so we calculate as follows:
- Take the total amount of fertilizer used: 4 kilograms.
- Divide this by the number of weeks: 5 weeks.
- Calculate the fertilizer used per week: 4 kg ÷ 5 = 0.8 kg per week.
So, the gardener used 0.8 kilograms of fertilizer each week.