3 x+3 y=30 3 x+3 y=9 3 x+3 y=21 3 x+3 y=?

## Step 1: Determine the value of the donkey-like figure### From the first equation, we have three identical donkey-like figures summing to 30. Let the value of each donkey-like figure be . Therefore, . Solving for , we get .## Step 2: Determine the value of the duck-like figure### In the second equation, a donkey and two identical duck-like figures sum to 9. We know from Step 1 that the donkey is worth 10. Let the value of each duck-like figure be . Thus, . Solving for , we get , so .## Step 3: Determine the value of the squirrel-like figure### The third equation involves a donkey and two identical squirrel-like figures summing to 21. Using the value of the donkey from Step 1, we have , where is the value of each squirrel-like figure. Solving for , we get , so .## Step 4: Solve for the unknown in the fourth row### The fourth row asks for the sum of two squirrel-like figures. Since each squirrel-like figure is worth 5.5 (from Step 3), the sum is .