Bella is baking chocolate chip cookies for an event. It takes 3/5 of a cup of flour to bake 6 cookies. She uses 1 1/10 cups of flour for every 50 chocolate chips used. There are a total of 150 chocolate chips for each tray of cookies.
If Bella is baking 2 trays of chocolate chip cookies, then how many cookies will she bake in total?
A. 40 cookies
B. 90 cookies
C. 66 cookies
D. 32 cookies
Bella uses 3/5 of a cup of flour for 6 cookies. We can find the equivalent fraction by dividing 6 by 3/5 which is 10/3 = <<6/(3/5)=10/3>>10/3 cups of flour for 6 cookies.
To find out how many cups of flour is needed for 1 cookie, we divide 10/3 by 6, which is 10/18 = 5/9 cups of flour for 1 cookie.
Bella uses 1 1/10 cups of flour for every 50 chocolate chips. We can find the equivalent fraction by dividing 50 by 1 1/10.
Converting 1 1/10 to an improper fraction, we get 11/10.
Dividing 50 by 11/10, we get 50 * 10/11 = 500/11 chocolate chips for 1 cup of flour.
For 1 cup of flour, Bella uses 500/11 chocolate chips, and she uses 150 chocolate chips for each tray.
Dividing 150 by 500/11 (which is multiplying by the reciprocal), we get 150 * 11/500 = 3.3 cups of flour for each tray.
For 2 trays, Bella will use 3.3 cups * 2 = 6.6 cups of flour.
Since 5/9 cups of flour is needed for 1 cookie, Bella will make 6.6 / 5/9 = 6.6 * 9/5 = 11.88 trays of cookies.
Since she can't bake a fraction of a tray, Bella will bake 11 trays of cookies.
Since there are 6 cookies in a tray, Bella will bake 11 * 6 = <<11*6=66>>66 cookies in total.
Therefore, the answer is C. 66 cookies.