laura is 2 inches taller than rebecca. maxine is 4 inches taller than rebecca. the total height for the three girls is 150 inches. how tall is rebecca

Answer 1

(r+2) + r + (r+4) = 150
3r+6 = 150
3r = 144
r = 48
now the others are clear, no?

Answer 2

4+2=6
150-6=144
r=144 inches