* Rate Question

[angad.patel]

[Question deleted because source was never cited.]

[Ben Ku]

Please cite the source (author) of this problem. We cannot reply unless a source is cited (and, if no source is cited, we will have to delete the post!). Thanks.

[stephen.p.webb]

Combined Rate Problem:

57+63= 120 floors/minute. Divided by 60 seconds, equals 2 floors/second

Calculate difference in floors: 51-11= 40 floors

40 floors/2 floors per second= 20 seconds when they will meet. Now solve for the floor each will be on in 20 seconds.

Steve: 11 + 57(20/60)= 11+19, or 30
Joyce: 51 - 63(20/60)= 51-21, or 30

Answer: C

[StaceyKoprince]

This question was deleted because the source was never cited. Please read (and follow!) the forum guidelines before posting.