Ronny and Johnny were getting ready for school. Ronny was the only one that had money to spend though, as Johnny spent 30 dollars last week on supplies. Ronny decided to buy a magazine about math that cost him $15.50 and he also bought four erasers. Ronny spent a total of $29.50. How much did each eraser cost Ronny? Use the variable “C” to represent the cost of each eraser. Write an equation to represent the situation, and slove the equation. Equation:

Each Eraser cost $3.50

Step-by-step explanation:

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$3.50

Step-by-step explanation:

Since the total amount he spent is $29.5

He bought magazine for$15.50 and 4erasers at x

So to determine the amount he spent on erasers,it will be

29.5-15.5

14.0

So he spent $14.00 on 4 erasers so to determine the amount he spent on each eraser

It will be

4 erasers=14

1 erasers=c

Cross multiply

14=4c

Divide both sides by 4

c=3.5

So he bought each eraser for $3.50

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.