Answer:
Step-by-step explanation:
1. 4x=7(x-3) Reason: Starting equation
2. 4x=7x-21 Reason: Distributive Property
3. -3x=-21 Reason: Subtracting Combining like terms
4. x=7 Reason: Division
The sales tax amount is $ 28.4
<em><u>Solution:</u></em>
Given that you purchase an ipod that costs $339
The tax rate is 8.375 %
To find: Sales tax amount
From given,
Cost price = $ 339
Tax rate = 8.375 %
Therefore, sales tax amount is 8.375 % of cost price

Thus sales tax amount is $ 28.4
First, Alvin gave Joyce and Sean 2/3 of the remainder, to solve first find the common denominator, which in this case is 24. Then, 1/3=?/24, 24/3=8 so it is 8/24 for the total given by Alvin. Joyce got 5/8, 5/8=?/24, 24/8=3,3 x 5=15, 15/24.
15/24 - 8/24= 7/24 is the answer