You can solve this by dividing the baches into the total amount of donuts.
147/7=21
Each batch has 21 donuts.
1/2 chance of getting an even number and 1/2 chance of getting an odd one.
The class 4S because you divide each number by its mean mark and standard division and 4S is the highest.
The unit rate for 'y' is 1/8 per x .
The unit rate for 'x' is 8 per y .
I believe the answer is A 3^7
