Question

Sapphire and Abe are shelving books at a public library. Sapphire shelves 25 books at a time, whereas Abe shelves 15 at a time. If they end up shelving the same number of books, what is the least number of books each could have shelved
a.50 books
b.75 books
c.120 books
d.10 books

Answer 1

Least number of books shelved by both will be L.C.M. of 25 and 15 and that is 75

So 75 is answer.

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