A student gets an aggregate of 60% marks in five subjects in the ratio 10 : 9 : 8 : 7 : 6. If the
passing marks are 50% of the maximum marks and each subjects has the same maximum
marks, in how many subjects did he pass the exam?
A. 2
B. 3
C. 4
D. 5
Solution(By Examveda Team)
Let the full marks of each subject is 100. So,
Total Mark in five subjects = 500.
Student gets 60% aggregate marks i.e. 60% of 500 = 300 marks.
10x + 9x +8x +7x +6x = 300
40x = 300
x = 300/40 = 7.5.
Marks in first subject = 10x = 10 *7.5 = 75.
Marks in second subject = 9x = 9 *7.5 = 67.5
Marks in third subject = 8x = 8 *7.5 = 60.
Marks in fourth subject = 7x = 7 * 7.5 = 52.5
Marks in last subject = 6 *7.5 = 45.
Thus, he passed in 4 subjects.
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Passed in 4 subjects would be if max marks are 100, if the question means 50% of max marks obtained by the student then he would pass in all subjects.
Can someone clarify what exactly the question is asking?
He passed in all the 5 subjects because he got 45 or 45+ m marks in all the subjects
X here means the ratio between all the subjects.
everything is right except the last statement. And would be 5 subjects as 45% is also included since he passed.
can someone explain me - what is the X value means ?
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