#### Answer

a) 20 apartments
b) 60 apartments

#### Work Step by Step

a) each floor has $5\times4=20\ apartments$
b) the building has $20\times3=60\ apartments$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

a) 20 apartments
b) 60 apartments

a) each floor has $5\times4=20\ apartments$
b) the building has $20\times3=60\ apartments$

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