Answer:
2nd option i think
Step-by-step explanation:
bro i highly doubt your in high school and look like that like naw
Answer:
4.74 hours
Step-by-step explanation:
Given that both person have to place same number of rivets that is
11209
first person take 9 hours to complete the work
hence 1 hour work of 1st person is
of total work
second person takes 10 hours to complete the same work
hence 1 hour work of 2nd person is 
Now if both work together then
1 hour work of both person =
=
thus working together they need
hours = 4.74 hours to complete the whole work which is placing 11209 rivets
0.9. The reason why is because the 5 brings the 8 to a 9.
8/10, because it's double the numbers
Her birthday took place on a Saturday. :)