Answer:
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:
[tex]\[\frac{1}{12}+\frac{1}{x}\][/tex] of the flowers.
But they can together complete the job in 8 hours. So in one hour they plant 1/8 of the flowers.
=> [tex]\[\frac{1}{12}+\frac{1}{x}=\frac{1}{8}\][/tex]
=> [tex]\[\frac{1}{x}=\frac{1}{24}\] [/tex]
=> x=24
So the second member can plant the flowers alone in 24 hours
