The average of marks of physics of 6 students in a class is 68% for makings the overall average of m

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15 Jun 2011 find the marks of 2 student

The average of marks of physics of 6 students in a class is 68% for makings the overall average of marks of 8 students 73, what should be the total marks of remaining two students (total marks of a subject are 100)

OPtion

1) 167
2) 176
3) 178
4) 164
5) 180
6) 192
7) 168
8) 148
9) 122
10) none of these

Solution

68*6 = 408
73*8 = 584
diff = 176

Correct Option: 2 Best Solution (13)

Harini Reddy   13 years AGO

first n=6,a=68
a=S/n implies S=408.
We now add 2 more student's marks..
(S+S1)/8=73
408+S1=584

S1=176

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Balakumaran N.A   13 years AGO

The avg. is 68 for 6 students, so total 6*68=408;
The avg. is 73 for 8 students, so total 8*73=584;

so, remaining total marks will be 584 - 408 = 176;

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Navneet Madhukar   13 years AGO

Required answer is
8x73-6x68
=584-408
=176.

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Karthick Babu   13 years AGO

73*8=584
68*6=408
difference is remaining two students total marks =584-408 = 176

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dharmaveer   13 years AGO

average of 8 students is 73. which is 8*73=584
average of 6 students is 68. which is 6*68=408

so the total marks of remaining two students is 584-408=176

so option 2

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Datla Kanthi   13 years AGO

6 students total physics marks = 6*68 = 408
8 students total physics marks = 8*73 = 584
2 students marks = 584-408= 176
so answer is option 2

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Sneha Latha M   13 years AGO

the total marks of remaining two students is : 8*73-600*(68/100)=176

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SWARNIMA UMARI   13 years AGO

total marks of 8 student is 8*73=584
total marks of a subject are 100.hence 68%of 100=68
hence total marks obtain by 6 student is 68*6=408.
remaining marks is 584-408=176

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Sunny Kumar   13 years AGO

average marks of 6 student = 68, so total marks of 6 student = 6*68 = 408.
average marks of 8 student = 73, so total marks of 8 student = 8*73 = 584.
total marks of remaining student = total marks of 8 student - total marks of 6 student.
total marks of 2 student= 584 - 408 = 176

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monika racharla   13 years AGO

avg of marks obtained in physics
X1=(x1+x2+x3+x4+x5+x6)/6=68
X1=408
total avg marks is
X=(x1+x2+x3+x4+x5+x6+x7+x8)/8=73
X=X1+x7+x8=584
marks obtained for remaining two students is
x7+x8=176

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Ankit Rai   13 years AGO

I want prize bcoz If I will get prize ,my interest will increase more in numerical aptitude

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Garima Mishra   13 years AGO

ttl mrks of remaining student= 73*8-68*6
= 584-408= 176

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leejia james   13 years AGO

total marks of 6 students= 68*6=408
total marks of 8 students= 73*8=584
total marks of 2 students= 584-408=176

Like? Yes (1) | No