Question 271930
A cd shelf can hold 256 cds. Currently 3/4 th of the shelf has cds. How many more cds must be added so that 7/8 th of the shelf has cds ?

A 32    b  16   c  8    d 24    e 48

3/4 ful means 256 * 3/4 = 192 cds

3/4 full means 192 CDs
7/8 full means ?  (192* 7/8 ) / 3/4

= 192 * 7 *4 / 3*8

= 224 Cds.

256 -224 = 32

32 CD's have to added