4. Eva, Beth, and Cara share the work of mowing 11 lawns that are the same size. Each girl mowed exactly the same area. How many lawns did Beth and Cara do together, in the lowest terms?
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To solve the problem, we can start by understanding that since Eva, Beth, and Cara mowed exactly the same area, we divide the total number of lawns by 3. 11 lawns ÷ 3 girls = 3 lawns each (with a remainder of 2) Each girl mowed 3 lawns, accounting for 9 of the lawns. That leaves 2 remaining lawns, which isn't enough for another full lawn per girl. Beth and Cara together mowed those remaining 2 lawns. Thus, if we combine the number of lawns mowed by Beth and Cara together, they mowed 3 + 3 + 2 = 8 lawns in total. So, the answer is that Beth and Cara mowed 8 lawns together.