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Physics help

We were going through a worksheet about moments at the end of the lesson and I got the answer wrong so i corrected it with the black pen but I’ve been looking over it now and the working doesn’t make sense? Could someone explain it to me please it’s the first question
https://drive.google.com/file/d/1oWeiJY-nTR4fvtTAYWF9uxBIXoYp2F5G/view?usp=drivesdk

Reply 1

BlueSoybean

where did you get 162 from?

Edit:. nevermind 😂

(edited 5 years ago)

Reply 2

BlueSoybean

using the moment about c, you found the reaction force at d.

then to find the reaction force at c, you did the sum of mass of the driver and motorbike - the reaction force at d

(edited 5 years ago)

Reply 3

Mikkiya

Original post by Leviathan1611

using the moment about c, you found the reaction force at d.

then to find the reaction force at c, you did the sum of mass of the driver and motorbike - the reaction force at d