Final answer:
Joseph receives $10 as his weekly allowance.
Step-by-step explanation:
To find out how much allowance Joseph receives each week, we need to first determine the total amount he saves in one week. Since he saves 50% of his allowance each week, and he saves $25 in 5 weeks, we can calculate:
Amount saved in 5 weeks = 50% of weekly allowance * 5
$25 = 0.5 * Weekly allowance * 5
Dividing both sides of the equation by 5 gives us:
$5 = 0.5 * Weekly allowance
To find the weekly allowance, we can divide both sides by 0.5:
Weekly allowance = $5 / 0.5
Weekly allowance = $10
Therefore, Joseph receives $10 as his weekly allowance.