Jenny, Noah and Mary baked cookies for the class party. They baked 15,18 and 17 cookies respectively. What percent of al cookies did Jenny bake

Assuming Jenny baked 15 cookies, we can make a percentage by first making a fraction.

So we would write 15/50 since they made 50 cookies total.

Now let's write 15/50 as a fraction over 100. That would be 30/100 when we multiply the top and bottom by 2. 30/100 as a percent would be 30 percent of all cookies.

To find the percentage of cookies baked by Jenny we first have to know how many cookies total there were. 15+18+17=50 cookies all together. The question is asking us "what percentage" (x) "of" (multiply) 50 "is" (equals) 15? Using the variables and numbers only our questiion becomes 50x = 15. Divide both sides by 50 to get x =.3. Since this value is a percentage, we find that percentage by multiplying by 100. 30%.