During a manoeuvre in a space walk an astronauts' pulse rate first rose 48 beats per minute then fell 15 beats per minute rose 32 per minute , and after the astronauts return to the capsule fell 50 beats per minute . What is the net change in the pulse rate

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48 beats per minute increasedAfter that 15 beats per minute fellchange=48-15=33 beats per minute increases.32 beat per minute roses33+32=65 beats per minute rosesAfter taking capsule , 50 beats per minute fellNet change= 65-50=15 beats per minute increased.   ANS...


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