What is 2.06% written as a decimal?

a bank paid 2.3% interest on a money market account. what is 2.3% written as a decimal?
a. 0.023
b. 0.23
c. 2.3
d. 23.0

when cooked, 85% of the kernels in a bag of microwave popcorn popped. there were 120 kernels of popcorn in the bag. how many kernels popped?
a. 102
b. 105
c. 141
d. 205