Verbal Reasoning - Arithmetic Reasoning - Discussion

Rawat and Abhishek examples are correct.

For each different number of boys and girls, we get different answers. So we cannot obtain the required answers without knowing the ratio of boys and girls.

So, from this we can conclude that "Data inadequate".

Note: Previously the answer was displayed ans 2/13 in this page. But after getting the suggestions from various math experts the answer has been updated to "Data inadequate".

Suggest me if this logic is wrong.

Let there are 5 girls and 8 boys.
Then total no students=13

No of girls participated =1
No of boys participated =1.

So, Total participation =2.
Thus, ratio=2/13.

@Sneha.

I love the way you added %age of boys and %age of girls to find out the total %age of participation. As per your logic if total boys and total girls participate the fete then total participation will turn to 200% just a minor increase of 100%.

1/5*8/8=8/40 ---- 1/8*5/5=5/40 $$ 5/40+8/40=13/40 (this formula is called fraction by inspection). Basic maths.

If we do view this as an LDM problem, then 13/40 would be correct.

1/5 girls = 8/40 girls.
= 13/40 total.
1/8 boys = 5/40 boys.

If 13/40 was correct, then the decimal. 325(13 divided by 40) when applied to any class size would provide the correct answer.

We know for a fact that:

= 1/5 girls.
= 2 children of 13 total.
= 1/8 boys.
= 13*0.325 = 4.225.

This conclusion is contrary to what we know to be true.

Therefore without knowing the total number of girls in the class and the total number of boys, it is impossible to determine an absolute fraction.

I agree with option B.

Because here the no. of girls are participated is 1/5.

And no. of boys are participated is 1/8.

And here ask what is the fraction of students that are participated.

So, 1/5+1/8 is equal to 13/40.

By taking L.C.M. of 1/5+1/8.

Let number of boys be 80 and numbers of girls be 50.

Therefore, total number of students = 80 + 50 = 130.

Number of boys who participated in fete = 1/8*80 = 10.

Number of girls who participated in fete = 1/5*50 = 10.

Therefore, total numbers of students who participated in fete = 20.

Hence, the fraction of students participating in fete = 20/130 = 2/13.

So the answer is option A.

1/8+1/5=13/40.

Boys participation = 1/8.

Girls participation = 1/5.

According to 1/8+1/5.

13/40 answer.

Answer:

Boys participation = 20%.

Girls participation = 12.5%.

Total participation = 32.5% = 32.5/100 = 13/40.