How many 1s are in 20?

20? Like if your asking how many 1s go into 20 it’s 20 because 20 divided by 1

Assuming that they both work at the same pace together 66/2=33*3=99 to get the whole house done because she takes 3 times as long and has to pick up the slack when cara is gone i think at least it sounds logical in my mind but maybe somebody thinks different but final answer
t=99 hours