It is 60 times greater than a second.
Answer:b
Step-by-step explanation:
While this problem seems confusing, the answer is rather simple.
All you have to do is the reverse of what they are asking.
This is, substract 8 to 60 and then divide by 4:

So the interval which 13 falls into is 10 to 20 and the answer is b.
Answer: 8
Step-by-step explanation: 6+10=16 16/2=8