Given that,
On Saturday, 8 children made a sandcastle in 5 hours.
We need to find the time taken to build a new sandcastle on Sunday if two more children joined the group.
8 children = 5 h
1 child = (5/8) h
When 2 children joined the group, total no of children now are 10.
It means,
10 children = [tex]\dfrac{5}{8}\times 10=6.25\ h[/tex]
Hence, it will take 6.25 h when 2 more children joined the group.
