210.
15 will go into 42 two times with 12 left over.
The only prime that will go into them is 3.
2 with remainder 15.
15 times
%*amount=answer .15(15%) * x = 42 thefore 42/.15= x x=280
15% of 42 = 42*15/100 = 6.3
1 with remainder 15.
2 with remainder 12.
42-15=27
1,555 with remainder 15.
The numbers that go into 30 are1, 2, 3, 5, 30, 15, 10, 6
gcf(15, 42) = 3.