Ask Question
3 July, 12:16

Brock is training for a Crossfit competition. He began the training completing pull-ups and box jumps origanally, his training plan had him completing and box jumps at a ratio of 5:4 After two months of his training, he decided to focus on his leg strength and adjusted his ratio 2:7. If he completed 63 box jumps at the end of his training, how many pull-ups and hos box jumps at the of his training, how many pull-ups did he completed in the initial stage of training

+4
Answers (1)
  1. 3 July, 16:09
    0
    If the adjusted ratio was 2:7, then

    2x is the number of pull-ups

    and

    7x is the number of box jumps.

    You can state that since he completed 63 box jumps at the end of his training, then

    7x=63,

    x=9

    and

    2x=18.

    The total number of exercises performed is 2x+9x=18+63=81.

    As at start the ratio was 5:4, then

    5y was the number of pull-ups

    and

    4y was the number of box jumps.

    Therefore, 5y+4y=81,

    9y=81,

    y=9

    and 5y=45, 4y=36.

    Answer: Initially: 45 pull-ups and 36 box jumps. At the end: 18 pull-ups and 63 box jumps.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Brock is training for a Crossfit competition. He began the training completing pull-ups and box jumps origanally, his training plan had him ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers