Protected: riyapauk Active 5 years ago Topics: 0Replies: 1☆ ProfileForums Topics StartedReplies CreatedEngagements Forum Replies Created Viewing 1 post (of 1 total) Author Posts November 14, 2019 at 2:11 pm #552644 riyapaukMember Topics: 0Replies: 1☆ Sir, on the same question how did they calculate the cost of chemical x? They got 300000*1.60=480000 Author Posts Viewing 1 post (of 1 total)