Answer:
Step-by-step explanation: 1.41421356237
The LCM of 4,10 and 12 is 60.
64 + 5 = 69
69 + 64 = 133 cupcakes
Answer:
3026
30
Step-by-step explanation: Average sum of the female and male's test score is the sum of expected value of each gender:

Assuming x represents the random male selected and y represents the random female selected:

3026
The average sum of their scores is 3026.
Average difference is the difference between the expected value (mean) of each gender:

1528 - 1498
30
The average difference of their scores is 30.