To find out how many toys Adriano has after 4 months, we start with the number of toys he has initially and then add the number of toys he gains each month for the number of months he collects.
- Initial number of toys: 3
- Number of toys gained each month: 4
- Number of months: 4
First, we calculate the total number of toys gained over 4 months:
\[ \text{Total toys gained} = \text{Number of toys gained each month} \times \text{Number of months} = 4 \times 4 = 16 \]
Next, we add the initial number of toys to the total toys gained:
\[ \text{Total toys after 4 months} = \text{Initial number of toys} + \text{Total toys gained} = 3 + 16 = 19 \]
Thus, after 4 months, Adriano has a total of 19 toys.