word Problem

Question

Ramal goes to the grocery store and buys 𝑎 pounds of apples and 𝑏 pounds of bananas.
Apples cost 𝑥 dollars per pound and bananas cost 𝑦 dollars per pound. The total cost, 𝐶,
that Ramal pays for the fruit is represented by the equation:

 

 

 

What could 0.10(𝑎𝑥 + 𝑏𝑦) represent in the equation above?
A. the amount of a 10% discount
B. the total cost after a $0.10 discount
C. the amount of sales tax paid if the sales tax rate is 10%
D. the cost of buying 0.10 pounds of apples and bananas

Answer 1

Obviously, multiplying the total cost C by 0.10 is taking 10% of the total cost, so it's Sales Tax.