If grade 7 students learn six periods and if one period is 40 minutes then how many seconds they learn per day A 12430
B 16500
C 14400
D 15420

C. 14400

Explanation:

40min × 6 periods = 240mins total.

1 minute = 60 seconds.

240 minutes × 60 = 14400 seconds.

what is the question?

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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