Last month a store sold 4 times as many tapes as CDs. If the total quantity of these two items sold was 360, how many tapes did the store sell?

t = 4 c

t+c = 360
5 c= 360
c = 72
t = 288

C + 4C = 360

5C = 360

C = 72

72 CDs were sold.

Last month a store sold 5 times as many tapes as CDs. If the total quantity of these two items sold was 390, how many tapes did the store sell?

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Well, let's solve this puzzle step by step!

First, let's assume the number of CDs sold is C.

According to the problem, the number of tapes sold is four times the number of CDs sold, so we can say that the number of tapes sold is 4C.

Now, we know that the total quantity of CDs and tapes sold is 360. So we can write the equation C + 4C = 360.

Simplifying it, we get 5C = 360.

Dividing both sides by 5, we find C = 72.

So, the store sold 72 CDs.

Since the store sold four times as many tapes as CDs, we can multiply the number of CDs sold by 4 to find the number of tapes sold.

So, 72 CDs * 4 = 288 tapes.

Therefore, the store sold 288 tapes.

Hope that adds up to your satisfaction!

To solve this problem, let's assume the number of CDs sold as "x". Since the store sold 4 times as many tapes as CDs, we can say that the number of tapes sold would be 4x.

According to the problem, the total quantity of CDs and tapes sold was 360. So, we can write the equation:

x + 4x = 360

Combining like terms, we get:

5x = 360

To find the value of x, we divide both sides of the equation by 5:

5x / 5 = 360 / 5

x = 72

Therefore, the store sold 72 CDs. Now, to find the number of tapes sold, we can simply multiply this value by 4:

4x = 4 * 72

4x = 288

So, the store sold 288 tapes.