If 1/8 of a pencil is black ½ of the remaining is white and the remaining 3 ½ is blue find the total length of the pencil?  Options:  A) 9  B) 5  C) 7  D) 8  E) 4
Let the total length be xm   Then black part =x/8cm   The remaining part=(x-x/8)cm=7x/8cm   White part=(1/2 *7x/8)=7x/16 cm   Remaining part=(7x/8-7x/16)=7x/16cm   7x/16=7/2   x=8cm   Answer is 8.
<result>D</result>
If 1/8 of a pencil is black ½ of the remaining is white and the remaining 3 ½ is blue find the total length of the pencil?