The total saving in purchasing 30 13-cent lollipops for a class party at a reduced rate of $1.38 per dozen is:

(30 * 0.13) - (1.38 * 2.5) = ?

d. $0.45

Right.

why 1.38*2.5

what is 2.5 comefrom

30 = 2.5 dozen

I understand now, thank you

:-) You're welcome.

Did you know that you can save money by purchasing items in bulk? For example, if you buy 30 lollipops for a class party at a reduced rate of $1.38 per dozen, you can save money compared to buying them individually. The total savings in this case would be $0.38, making option (B) the correct answer. By taking advantage of bulk discounts, you can stretch your budget and get more for your money.

To find the total savings in purchasing 30 13-cent lollipops at a reduced rate, we need to calculate the regular cost and the discounted cost, and then subtract the discounted cost from the regular cost.

First, let's find the regular cost:
Since each lollipop costs 13 cents, the regular cost of purchasing 30 lollipops is 30 * 13 cents = $3.90 (in cents).

Next, let's find the discounted cost:
The reduced rate is $1.38 per dozen. Since there are 30 lollipops, we need to find how many dozens that corresponds to:
30 lollipops ÷ 12 (lollipops per dozen) = 2.5 dozens

Now, let's calculate the discounted cost:
2.5 dozens * $1.38 per dozen = $3.45

Finally, let's calculate the savings:
Regular cost - Discounted cost = $3.90 - $3.45 = $0.45

Therefore, the total savings in purchasing 30 13-cent lollipops at a reduced rate is $0.45.

So, the correct answer is (D) $0.45.