Latest exam Aptitude Question SOLUTION: 0.0625a + 0b + 0c + 0d =0 -0.125a + 0.5b - 0.25c + 0d=5.625 0a - 0.25b + 0.55c - 0.1d =0 -0.25a + 0b -0.1c + 0.4d =-7.5