Answer :
There are 10 "tenths" in one whole number.
15 --> 15 whole numbers --> 15 * 10 = 150 --> 150 tenths
0.03 --> 3 hundredths --> 10 hundredths = 1 tenth --> 3/10 tenth
150 3/10 tenths in 15.03
15 --> 15 whole numbers --> 15 * 10 = 150 --> 150 tenths
0.03 --> 3 hundredths --> 10 hundredths = 1 tenth --> 3/10 tenth
150 3/10 tenths in 15.03