M4maths Previous Puzzles

10 Jul 2014 Solve

Marks of Physics are printed in reverse order in the mark sheet of Surjeet. If printed marks are less than the correct marks and he gets 67 % after this mistake then which % out of these options is incorrect for the correct mark sheet (It is given that Surjeet gets success either according to mark sheet obtained or according to corrected mark sheet. Total marks of the examination are 500)

OPtion

1) 74.2
2) 76.0
3) 70.6
4) 72.4
5) 79.6
6) 68.8
7) 77.8
8) 67.8
9) 69.4
10) None of these

Solution

In this reverse printing procedure possible conditions are as given below
Correct marks -- Printed marks -- Difference
43 ------------- 34 ------------- 9
53 ------------- 35 ------------- 18
54 ------------- 45 ------------- 9
63 ------------- 36 ------------- 27
64 ------------- 46 ------------- 18
65 ------------- 56 ------------- 9
73 ------------- 37 ------------- 36
74 ------------- 47 ------------- 27
75 ------------- 57 ------------- 18
76 ------------- 67 ------------- 9
83 ------------- 38 ------------- 45
84 ------------- 48 ------------- 36
85 ------------- 58 ------------- 27
86 ------------- 68 ------------- 18
87 ------------- 78 ------------- 9
93 ------------- 39 ------------- 54
94 ------------- 49 ------------- 45
95 ------------- 59 ------------- 36
96 ------------- 69 ------------- 27
97 ------------- 79 ------------- 18
98 ------------- 89 ------------- 9
Therefore possible increments in % are 1.8, 3.6, 5.4, 7.2, 9.0, 10.8
Hence the solution is 79.6 % with
increment of 12.6 %.

Correct Option: 5 Best Solution (0)