# Math Puzzle 29

This math puzzle 29 is on intersection, perpendicular lines,fraction, LCM etc.

1) The point of intersection of the lines x + 2y = 4 and 3x + 6y = 7 is
A. (3,1/2)      B. (1/3,1)      C. (1,2)      D. (3,6)      E. Never meet

2) In how many ways can 5 people occupy 5 seats in a train?
A. 20      B. 25      C. 120      D. 125      E. 625

3) If x = 272/3 ,y = 251/2 , z = 641/3 , which has the largest value?
A. x      B. y      C. z      D. y, z      E. x, y

4) Which of the following is arranged in ascending order?
I 1/2, 1/3, 1/4, 1/5
II 4/5, 3/4, 2/3, ½
III 1/2, 2/3, 3/4, 4/5
IV 1/4, 1/3, 1/5, 1/2

A. I      B. II      C. III      D. IV      E. None of these

5) A solid cylinder has its radius equal to its height. What is the ratio of the area of the 2 ends to its curved surface area?
A. 1:2      B. 1:1      C. 2:1      D. 1:2π      E. 2π:1

6) Three bells ring at intervals of 3 seconds, 5 seconds and 8 seconds respectively. If they start ringing at the same time, how many times would all the three bells have rung before they ring together again?
A. 8      B. 11      C. 13      D. 16      E. 79

7) Which point on the x-axis is equidistant from (5, 4) and (-2, 3)?
A. (0, 2)      B. (2, 0)      C. (-2, 0)      D. (0, -2)      E. (10, 4)

8) Which of the following pair of lines are perpendicular to each other?
I x-2y+10=0 and x-2y+14=0
II 3x+y+8=0 and x+3y+12=0
III 3x-y+8=0 and x+3y+12=0

A. I      B. II      C. III      D. II & III      E. Cannot be determined

9) A train starts at a speed of 120 miles/hour, and reduces speed for every 1/2 hour by 20 miles/hour for the next 3 hours. How far does it traves in 3 hours?
A. 150      B. 210      C. 300      D. 360      E. 420

10)Car A covers a distance of 5 miles in 3 minutes, car B travels 9 miles in 6 minutes, car C travels 12 miles in 15 minutes. How fast is car A compared to car B (in percentage terms?
A. 10      B. 11.11      C. 42      D. 48      E. 52

Math puzzle 29

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