A small grill can hold two hamburgers at a time. If it takes 10 minutes to cook one side of a hamburger, and 5 minutes to cook the other side, then what is the shortest time needed to cook both sides of three hamburgers? (HINT: You are allowed to cook one side of a hamburger and then set it aside before cooking the other side.)

30

The actual answer is 25!

a can that contains 5 red balls and 3 green ball has a mass of 43g

when the can contains3red balls and 5 green balls the mass is37g
when the can contains 1 red ball and 1 green ball the mass is 19 g
what is the mass of the can and each ball

To find the shortest time needed to cook both sides of three hamburgers using a small grill, we can break down the process step by step.

Step 1: Cook one side of the first hamburger.
It takes 10 minutes to cook one side of a hamburger.

Step 2: Set aside the partially cooked hamburger.
Once you have cooked one side of the first hamburger, you can set it aside while you cook the other sides.

Step 3: Cook the second side of the first hamburger.
It takes an additional 5 minutes to cook the other side of a hamburger.

Step 4: Repeat steps 1-3 for the other two hamburgers.
Cook one side of the second hamburger for 10 minutes, set it aside, and then cook the second side for 5 minutes. Repeat the same process for the third hamburger.

Therefore, the total time needed to cook both sides of three hamburgers using the small grill is:
10 minutes (1st hamburger - first side) + 5 minutes (1st hamburger - second side) + 10 minutes (2nd hamburger - first side) + 5 minutes (2nd hamburger - second side) + 10 minutes (3rd hamburger - first side) + 5 minutes (3rd hamburger - second side) = 45 minutes.

So, the shortest time needed to cook both sides of three hamburgers is 45 minutes.