While baking cookies, william accidentally over baked and burned many of the cookies. his "burned ro unburned" rstio was 1 to 3. he made 45 unburned cookies. what percent of the total cookies were burned.

burned : unburned = 1 : 3

burned/total as a percentage

burned : total = burned : (burned + unburned) = 1 : (1+3) = 1 : 4

As a fraction, this is 1/4 = 0.25 = 25%

25% of the total cookies were burned.

"%" is a fancy way to write "/100". You know from place value that 0.25 (twenty-five hundredths) is 25/100, so that can also be written as 25%.

15 batches are the most you can make

step-by-step explanation:

i think it might be a but you might want a second opinion