A envelop weight 8.5 gm,if 800 of these envelop are sent with an advertisement mail. How much wieght?  Choose the correct choice from the following.
A) 6.6kg  B) 6.8kg  C) 6.7kg  D) 6.9kg  E) 7.8kg
800*8.5   6800.0gm   6.8kg   ANSWER:6.8kg
<result>B</result>
A envelop weight 8.5 gm,if 800 of these envelop are sent with an advertisement mail. How much wieght?