Jackie can do 5 push-ups in 10 seconds. How many push-ups can she do in one minute if she takes two 8-second breaks? Think carefully first, then make a decision:
There are 60 seconds per minute, so Jackie's push - up routine takes 1 * 60 = 60 seconds. Her breaks last 2 * 8 = 16 seconds. She does push - ups for 60 - 16 = 44 seconds. She can do a push - up in 10 / 5 = 2 seconds. Therefore, Jackie can do 44 / 2 = 22 push - ups in one minute with breaks. So, the answer is 22.