Question

Mosquitoes are annoying insects. To eliminate mosquito larvae, a certain granular substance can be applied to standing water in a ratio of 1 tsp per 10 sq ft of standing water.

a. At this rate, find how many teaspoons of granules must be used for 210 sq ft.

Answer 1

To eliminate mosquito larvae in 210 sq ft of standing water, one must use 21 teaspoons of a granular substance, based on the ratio of 1 tsp per 10 sq ft.

Step-by-step explanation:

To solve the mathematical problem completely, we need to determine the number of teaspoons of granules required for 210 sq ft of standing water based on the given ratio of 1 tsp per 10 sq ft.

Step-by-Step Calculation

Identify the prescribed ratio: 1 tsp for every 10 sq ft of water.

Calculate the factor by which the surface area in question (210 sq ft) exceeds 10 sq ft. This is done by dividing 210 sq ft by 10 sq ft, which gives us 21.

Multiply the factor from step 2 with the amount of granules needed per unit area (1 tsp per 10 sq ft) to get the total teaspoons needed. So, 1 tsp multiplied by the factor 21 gives us 21 tsp.

Therefore, 21 teaspoons of the granular substance must be used to treat 210 sq ft of standing water to eliminate mosquito larvae.