Peter is trying to work out by completing sit-ups and push-ups in order to gain muscle mass. Originally, Peter was completing five sit-ups for every three push-ups, but then he injured his shoulder. After the injury, Peter completed the same number of repetitions as he did before his injury, but he completed seven sit-ups for every one push-up. During a training session after his injury, Peter completed eight push-ups. How many push-ups was Peter completing before his injury?

Answer:24 push- upsStep-by-step explanation:before injury the sit-up to push-up ratio was 5:3after the injury the sit-up to push-up ratio is 7:1now it is given that  after his injury, Peter completed eight push-ups and he  completed the same number of repetitions as he did before his injurynow eqauting the ratio 1 = 8therefore 3= 3*8 = 24 so, peter did 24 push-ups after his injury