exam Maths Puzzle Numerical Ability

B is the interior of <AOC. C in the interior of <BOD. Dis in the interior of <COE. m<AOE = 175, m<COE = 110 and m<AOB = m<COD = m<DOE.

Find m<BOC.

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exam Other Question

Frank can complete a job in 5 hours. Joe can do it in 8 hours. After Frank had worked for two hours, Joe was asked to help Frank complete the job. In how many hours after Joe has started will they complete the job? J(AF)=130.84 I need to find values for J,A, AND F