13. Three persons were asked how many, cars and how many houses their boss had. Each of the three persons told the truth to one question but told a lie to the other. The responses are:
Person 1 : 8 cars and 6 houses
Person 2 : 7 cars and 4 houses
Person 3 : 7 cars and 7 houses
The number of cars plus the number of houses their boss has is
(A) 11
(B) 12
(C) 13
(D) 14
(E) 15
14. There were 20 red marbles and 20 blue marbles in a box. Amber randomly took 20 marbles from the box and Bruce took the rest. The number of red marbles Amber got is x and the number of blue marbles she got is y. The number of red marbles Bruce got is a and the number of blue marbles he got is b.
Which of the following statements is always true?
(A) y≥ 1
(B) x=y
(C) y=b
(D) y=a
(E) x=a
15. Three rectangles of the same height are shown. The numbers in the rectangles represent their areas in cm².