He saves $ 1.75 each day from his allowance.
<u><em>Explanation</em></u>
The ratio of his savings and expenses is 7 : 5
Lets assume, his savings = 7x dollar and his expenses is 5x dollar
Given that, his daily allowance is $3. So....
So, the amount of his savings each day
To solve this problem you must apply the proccedure shown below:
1. First, you must multiply $8 by the hours given in the exercise:
2. Now, multiply the result obtained above by 4, to calculate her monthly income:
3. If 22% of her paycheck goes to taxes, you have:
Therefore, the answer is: $624