Given: TC=total cots, L=labor, M=materials, P=paid amount, x-PROFIT --> TC=L+M, P-TC=x, Is x>150,000 OR Is P-TC>150,000
st(1) TC=3M, we can deduce from TC=L+M that 3M=L+M and 2M=L; the composition of TC is such L=2/3, M=1/3 of TC, Not Sufficient as we can't find values for TC and define if x>150,000, only ratios for TC are known;
st(2) 500,000-TC>L we can deduce that 500,000>L+TC OR 500,000, BUT what is TC value, Not sufficient;
Combined st(1&2): from st(2) we define 500,000>L+TC and from st(1) we define the composition of TC (1=2/3+1/3 with L and M), now combine --> 500,000>(2/3)*TC+TC, 500,000>(5/3)*TC, 300,000>TC. Finally we know that TC is less than 300,000 and P=500,000 with P-TC should be greater than 150,000 --> TC<300,000, P=500,000 and 500,000-299,999>150,000. Our answer is Yes, C (combined st 1&2) is Sufficient
IOM C
