One member of a gardening club can plant flowers in 12 hours. with two members of the club working together the job can be done in 8 hours. how long would it take the second member of the club , working alone to do the job

24 hours

Step-by-step explanation:

One member of the gardening club can alone plant flowers in 12 hours.

So in 1 hour he can plant 1/12 of the flowers.

Let the time required by the second member of the club to plant flowers alone be x hours.

Then in 1 hour he can plant 1/x of the flowers.

Now when the two members work together,each hour they can plant:

of the flowers.

But they can together complete the job in 8 hours. So in one hour they plant 1/8 of the flowers.

=>

=>

=> x=24

So the second member can plant the flowers alone in 24 hours

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.