10 friends want to equally share a rectangular pan of granola bars. show how to divide the rectangle into 10 equal pieces.

Can somebody me out with this question

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?