A envelop weight 8.5 gm,if 800 of these envelop are sent with an advertisement mail. How much wieght?
Pick one:
A) 6.6 kg
B) 6.8 kg
C) 6.7 kg
D) 6.9 kg
E) 7.8 kg

Rationale: "800 * 8.5 6800.0 gm 6.8 kg answer : b"
Answer: B