Land areas

Two land areas are 244 m2. The first parcel is 40 m2 less than twice the second one. What has the acreage of each parcel?

Correct answer:

a =  149.3333 m2
b =  94.6667 m2

Step-by-step explanation:


a+b = 244
a = 2b - 40

a+b = 244
a = 2·b - 40

a+b = 244
a-2b = -40

Row 2 - Row 1 → Row 2
a+b = 244
-3b = -284


b = -284/-3 = 94.66666667
a = 244-b = 244-94.66666667 = 149.33333333

a = 448/3 ≈ 149.333333
b = 284/3 ≈ 94.666667

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