Answer:
I'm pretty sure its b but I'm not sure I'm sorry if it's wrong
21/30 as a percent would be 70%.
6x
x=10
So replace "x" in 6x with 10 and you get,
6(10)
It can be seen as
6 x 10
and 6 x 10 is 60.
So your answer would be 6x = 6(10) = 60
A bit messy.Pls don't mind it