time and a half mean
example, if he work for 1 hour normal, then he get 1 hour pay
but time and a half, is if he works 1 hour overitme, he gets paid for 1.5 time
double time is work 1 hour, get paid 2 hours
basically, multiply all normal hours by 1, multpliy al overtime hours by 1.5 and multiply al holiday hours by 2
40 hours normal
9 hours overtime
12 hours holidy
40*1=40
9*1.5=13.5
12*3=24
add up
40+13.5+24=77.5 hours counted
now 11 per our
11 times 77.5=852.50
C is answer