Answer:
He would have to save $1386.666 per month
Explanation:
50% of the gross pay is equal to
0.5 * $5200 = $2600
The amount he needs for an 8 month fund is
$2600*8 = $20800
If he wants to save over a 15 month period,
$20800/15 months = $1386.666 per month