an insecticide originally contained 1/2 oz of pyrethrins. the new formula contains 5/8 oz of pyrethrins. what percent of pyrethrins of the original formula does the new formula contain?

(1/2)/(5/8), change to percent. I think this is how you do it, hopefully someone will correct me if I'm wrong. Just a heads up that I'm not 100% positive on this one.

The new fromula contains more than the old formula.

100 * (5/8) / (1/2) = 1000/8 = 125%

To find the percentage of pyrethrins in the new formula compared to the original formula, you can follow these steps:

Step 1: Calculate the difference in the amount of pyrethrins between the new and original formulas.

To find the difference, subtract the amount of pyrethrins in the original formula from the amount in the new formula:

Difference = Amount in new formula - Amount in original formula

Difference = 5/8 oz - 1/2 oz

Step 2: Calculate the percentage of the original formula's pyrethrins in the new formula.

To find the percentage, divide the difference by the amount in the original formula and multiply by 100:

Percentage = (Difference / Amount in original formula) * 100

Now, let’s plug in the values and calculate:

Difference = (5/8) - (1/2) = 5/8 - 4/8 = 1/8

Percentage = (1/8) / (1/2) * 100 = (1/8) * (2/1) * 100 = 16.67%

Therefore, the new formula contains 16.67% of the pyrethrins in the original formula.