Question

The 8th grade math team is having a bake sale as a fundraiser. Alan can make 5 cookies in 2 minutes. Abigail can make 8 cookies in 3 minutes. However, Katie eats 1 cookie every 6 minutes. How many minutes will it take to make 5 dozen cookies.

Answer 1

Answer: B. 12

Explanation:

1) Alan can make 2.5 cookies per min

2) Abi can make 8/3 which is 2.7.

3) overall, 5.2 cookies per minute can be made.

multiple 5.2 x 6 and you get around 31.5?

then subtract =1. you have 30.5, now add onto that number 31.5, which is another 6 minutes. since you're still only subtracting 1, the answer would be above 60, which is 5 dozen, and it only took 12 mins