Two reactions take place in the reactor following the stoichiometry shown below:

2 A 5 C and A 2 D

If 122.4 mol of A is fed into the reactor, 18.0 mol of A is leaving the reactor at the end of the process and 91.0 mol of C is produced, calculate the percent yield of C. (Report in % format using two decimal figures, e. g. 99.99%)