During a nature walk, jill identified 20 species of animals and plants. if 3/5 of the species jill identified were animals, how many plants did jill identify?

  Jill identified 8 species of plants. The number of plants identified is unknown.

Step-by-step explanation:

We are apparently to assume that the species Jill identified were either plants or animals. Hence 2/5 of those identified were plants. That makes the number of plant species ...

  (2/5)(20) = 8 . . . . plant species identified.

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The question asks how many plants (not plant species) Jill identified. The problem statement does not give us sufficient information to answer that question.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.