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Vicky is working as a gardener and needs to apply the right amount of fertilizer.

Fertilizer Application Rates
- Large trees: 100 millilitres (mL) per 9 litres (L)

Vicky has just planted a new lawn. How many more millilitres (mL) does she need in her measuring container to mix in her watering can, which holds 9 litres (L)?

Answer:
[tex]\[ \boxed{850} \, \text{mL} \][/tex]

Sagot :

Alright, let's determine how many more milliliters of fertilizer Vicky needs for her watering can that holds 9 liters (L) of water. Here's a step-by-step breakdown:

1. Understand the given values:
- Initial fertilizer amount in the container: 850 milliliters (mL)
- Required fertilizer rate per 9 liters of water: 100 milliliters (mL)

2. Determine the difference between the required amount and the current amount:
- We need to find out how much more fertilizer Vicky needs. This can be calculated by subtracting the required amount from the initial amount she already has.

3. Perform the calculation:
- Initial fertilizer amount: 850 mL
- Required fertilizer amount: 100 mL
- The difference is:
[tex]\[ \text{Difference} = \text{Required amount} - \text{Initial amount} \][/tex]
[tex]\[ \text{Difference} = 100 \, \text{mL} - 850 \, \text{mL} \][/tex]
[tex]\[ \text{Difference} = -750 \, \text{mL} \][/tex]

4. Interpret the result:
- The result is -750 mL, which means Vicky has 750 milliliters more than she needs.

Conclusion: Vicky needs no additional fertilizer; in fact, she should remove 750 milliliters from her container to meet the required application rate of 100 milliliters per 9 liters of water.