The next-door neighbors are spending 10 hours a week maintaining their 1/2 acre property. You are thinking about landscaping your own property in exactly the same way, but it is a 4/3 acre lot. How many hours per week
will you have to spend maintaining your property?

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)