Question

Sue bought a total of 12 candy bars at the store. Some cents cost 50 cents each and the rest cost 75 cent each. Write an expression to represent. a. The number of 75 cent bars if she bought y 50 cent bars b. The total cost, in cents, for all of the bars.

Answer 1

According to this, the answer is:

a. x=(c-0.50y)/0.75

b. c=0.75x+0.50y

Explanation:

With the information provided, the total cost in cents is equal to the result of the price of the 75 cent bars for the amount of bars plus the price of the 50 cent bars for the amount of bars, which would be:

c=0.75x+0.50y, where:

x is the amount of the 75 cent bars

y is the amount of the 50 cent bars

Now, you can solve for x to determine the expression that represents the number of 75 cent bars if she bought y 50 cent bars:

c-0.50y=0.75x

(c-0.50y)/0.75=x

x=(c-0.50y)/0.75

According to this, the answer is:

a. x=(c-0.50y)/0.75

b. c=0.75x+0.50y