self Maths Puzzle

15) A number is such that when it is multiplied by 8 , it gives another which is as much above from 270as the original (itself) is below 270. The average of the original number and the resultant number is
A) 33.75
B) 190
C) Cannot be determined
D) 270

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self Other Question

12) What is the greatest possible length of scale to measure exactly the following lengths.
20 Feet , 13 Feet 9 inches , 17 Feet 6 inches , 21 feet 3 inches.
16) A car crosses a man walking at 6 km/h. The man can see the things up to 450m only in one direction due to fog. He sees the car which was going in the same direction for 4.5min. What is the speed of the car?
A) 9kmph
B) 12kmph
C) 12.5kmph
D) 15kmph