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PLEASE HELP

When Grayson does 8 push-ups and 9 sit-ups, it takes a total of 34 seconds. In comparison, he needs 56 seconds to do 8 push-ups and 20 sit-ups. How long does it take Grayson to do each kind of exercise?


Sagot :

Answer:Many bodybuilders and fitness enthusiasts try to do more than 300 pushups a day. For an average man, doing 50 to 100 pushups should be enough to maintain a good upper body.Ma

Step-by-step explanation:

Answer:

2 seconds per push-up

2 seconds per sit-up

Step-by-step explanation: