If the product of five tenths and two tenths is subtracted from the sum of one tenth and three tenths, what is the difference? : *

A) − 0.30
B) 0.30
C) − 0.60
D) 0.60

Let's calculate each part step by step:

Sum of one tenth and three tenths: 1/10 + 3/10 = 4/10 = 0.4

Product of five tenths and two tenths: 5/10 * 2/10 = 10/100 = 0.1

Now, subtract the product from the sum: 0.4 - 0.1 = 0.3

Therefore, the difference is B) 0.30.