Let the hall be A=1. For 3 hours 16 people can decorate the hall. Then P1=A\(t1.number people1) P=1/48. That is for 1 person. You have 24 people to decorate the same hall. Their P2 will be (1/48).24=1/2. t2=A/P2=2 hours
The answer is C
By the way, that expression means "n choose k". Hope I helped!
Well you have to subtract -2 to both sides and it well look like Y= -2+13 and then y=x+4
Give better description if they are both identical
