Answer:
5 gemstones
Explanation:
There are 60 gemstones and there are 6 groups to which the gemstones are distributed equally.
So, each group will have
[tex]\dfrac{60}{6}=10\ \text{gemstones}[/tex]
Now, out of the [tex]6[/tex] groups one group is taken and split into two equal halves so the halved group will have
[tex]\dfrac{10}{2}=5\ \text{gemstones}[/tex]
So, each friend will have 5 gemstones.