Question

the ratio of marks obtained by a student in 3 subjects was 1:2:3. The school decided to allow grace marks of 5% for each
subject. Find the student's new ratio.
A 1:2:3
B. 2:3:4
C. 23:1
D. 3:2:1
​

Answer 1

Answer:

answer is option n 2:3:4

Answer 2

Option 'a' is correct.

Step-by-step explanation:

Since we have given that

ratio of marks obtained by a student in 3 subjects = 1:2:3

If there is grace marks of 5% for each subject.

Then, marks becomes 105% i.e. 1.05 times of original marks.

According to question, it becomes,

$1\times 1.05:2\times 1.05:3\times 1.05\\\\=1:2:3$

So, the ratio becomes same.

Hence, Option 'a' is correct.

# learn more:

The marks obtained by 12 students in a mathematics examination are given below.48,78,93,90,66,54,83,58,60,75,89,84.Find (i) the mean of the marks; (ii) the mean mark of the students if each student is given 4 grace marks.

https://brainly.in/question/7400083