The marks of three students in English test are in the ratio 3:4:5. If the second student got 76 marks
what are the marks of the other two students .
Answers
Answer:
Correct option is
C
82
We have
x
1
=60,x
2
=75,x
3
=85,x
4
=95,w
1
=1,w
2
=1,w
3
=1 and w
4
=2
∴
X
w
=
w
1
+w
2
+w
3
+w
4
w
1
x
1
+w
2
x
2
+w
3
x
3
+w
4
x
4
⇒
X
w
=
1+1+1+2
1×60+1×75+1×85+2×95
=
5
410
=82
Answer:
Let marks of 3 students be 2x, 3x, 4x
Let marks of 3 students be 2x, 3x, 4xSum of marks = 9x
Let marks of 3 students be 2x, 3x, 4xSum of marks = 9xMaximum marks has to be of 3rd student as his ratio is 4 parts.
Let marks of 3 students be 2x, 3x, 4xSum of marks = 9xMaximum marks has to be of 3rd student as his ratio is 4 parts.Hence, 4x = 36
Let marks of 3 students be 2x, 3x, 4xSum of marks = 9xMaximum marks has to be of 3rd student as his ratio is 4 parts.Hence, 4x = 36x = 9
Let marks of 3 students be 2x, 3x, 4xSum of marks = 9xMaximum marks has to be of 3rd student as his ratio is 4 parts.Hence, 4x = 36x = 9Sum of marks = 9x = 9×9 = 81%
= (36/81) × 100 = 44.44%
Step-by-step explanation:
Hope it will help you..