To find the total cost of the television, we need to add the down payment to the total amount paid in monthly installments.
- Down payment: $40
- Monthly payments: 16 payments of $20 each
First, calculate the total amount paid in monthly payments:
\[ \text{Total monthly payments} = 16 \times 20 = 320 \]
Next, add the down payment to this total:
\[ \text{Total cost of television} = \text{Down payment} + \text{Total monthly payments} = 40 + 320 = 360 \]
Therefore, the total cost of the television is $360.