If the import of Company A in year 1992 and the export of Company B in year 1990 was Rs 66 lakhs and Rs 166 lakhs respectively then what was the sum (in Rs) of export of A in year 1992 and import of B in year 1990 ?

Direction (Q. 6 - 10) : A total of 2 lakh students appeared for the IIT entrance examination. 2.2% of total candidates scored more than 50% marks in Chemistry, 2.15% got more than 50% marks in Physics and 1.9% got 50% in Maths. 0.45% students got above fifty per cent in Physics and Maths but not in Chemistry. The same number of students got above fifty per cent in Physics and Chemistry but not in Maths. 0.35% of students got more than 50% marks in Maths and Chemistry but not in Physics. the total candidates scored above 50% marks in all three subjects.

What is the number of students who scored above 50% marks in Maths only ?