Question

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 .

Answer 1

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 2

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..