Ursula is making treasure boxes for campers. There are 12 younger campers, and each of their boxes contains 4 prizes. There are 10 older campers, and each of their boxes contains 6 prizes. Drag the tiles to complete an expression to represent how many prizes Ursula needs in all. Tiles may be used once or not at all.

Step-by-step explanation:

The box is given as: [+] [*] [4] [6] [10] [12]

                                   (12 * [])[](10 * [])

The above is missing in your question.

Required

Complete the box

First, we need to determine the prizes for the younger ones.

Where

Then, we determine the prizes for the older ones.

Where

Add these two expression to give total.

By comparison, the tiles can be completed as thus:

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.