Page 26 - Digi Notes : Maths - 11.03.2016

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SI  P r t 
100

 Rs . 85  Rs . 1500 r  1  r  17 %
100 3

Part 1 Part 2

6% 5%
17 %
3
2 : 1
3 3

Part 1 : Part  2 : 1
2
 Part  Rs . 1500  1 Rs . 500
2
3

38. The average of marks obtained by 120 candidates in

a certain examination is 35. If the average mark of passed

candidates is 39 and that of the failed candidates are 15.

What is the number of candidates who passed in the

examination?

Average Marks Passed Average Marks Failed

39 15

35
 20 :  4

Average Marks Passed : Average Marks Failed  5 : 1

Passed Candidates  120  5  100
6

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