Question

A suburban shopping mall has 105 rows of parking spaces with 45 spaces in each row. A special permit is required to park in 630 of those spaces. How many spaces do not require a special permit

Answer 1

Given

no. of rows = 105

no. of spaces = 45 in each row

total no. of spaces = 105*45= 4725

no. of spaces required special permit

= 630

remaining rows = 4725 - 630

=4095