Question

6 erasers cost $6.60. Which equation would help determine the cost of 3 erasers? Choose 1 answer:

(A) (3)/(x)=($6.60)/(6)
(B) (3)/(6)=($6.60)/(x)
(c) (x)/(3)=(6)/($6.60)
(D) (x)/(3)=($6.60)/(6)
(E) None of the above

Answer 1

The correct equation to determine the cost of 3 erasers when 6 erasers cost $6.60 is option (D) (x)/(3)=($6.60)/(6). This equation helps us calculate that 3 erasers will cost $3.30.

Step-by-step explanation:

To determine the cost of 3 erasers when 6 erasers cost $6.60, we need to find a relationship that relates the number of erasers to their cost. The most straightforward way to do this is to use the concept of unit price, which is the cost per single eraser in this case.

We know that 6 erasers cost $6.60, so we can calculate the unit price by dividing the total cost by the number of erasers. The equation (D) (x)/(3)=($6.60)/(6) would help us calculate the cost of 3 erasers, where 'x' represents the total cost for 3 erasers.

If we solve this equation, we get:

x/3 = 6.60/6

Therefore, x = (3 * 6.60) / 6 = 3.30

This indicates that the cost of 3 erasers is $3.30.