To multiply fraction:
Numerator x Numerator
Denominator x Denominator
First, change the mixed number to improper fraction:
Whole number x denominator, then add the numerator to the product. Copy the denominator.
1 1/2 = (1) (2) + 1 = 3/2
Multiply:
4/10 x 3/2 = 12/20
Simplify to lowest term:
12/20 = 3/5
The answer is 3/5.