60 seconds in a minute
12 goes into 60, 5 times,
So 5 * 28 = 140
140 claps per minute
0.5 minute is 30 seconds, half a minute so divide by 2,
140/2 = 70
70 times every 0.5 minutes
Refer to below for answer:
B I assume, not 100% sure
H is 728282 I’m not 100% sure tho