A building has 2 floors. Each floor has 4 rooms. Each room has 6 tables. Each table has 5 typewriters. How many typewriters would have to be taken off each table so that the number of typewriters on the tables on one floor would be the same as the number of tables in the building?

1 answer

4*6*(5-x) = 2*4*6*
5-x = 2
x = 3