Question

In a College there are 1800 students. Last day except 4% of the boys all the students were present in the college. Today except 5% of the girls all the students are present in the college, but in both the days number of students present in the college, were same. The number of girls in the college is?

Answer 1

Answer:

Step-by-step explanation:.....1girl+0.96boys=0.95g+1boy bcoz number of studens are same...hence we get girls :boys=4:5

so 1800\9*2=800

Answer 2

The total number of girls in the college is 800

Solution:

Last day except $4\%$ of the boys all the students were present in the college. Today except $5\%$ of the girls all the students are present in the college

As both the numbers present are same,

Hence we can say,

$1 \ girl + 0.96 \ boy = 1 \ boy +0.95 \ girl$

$(1-0.95) girl = (1-0.96)boy$

$0.05 girl = 0.04 boy$

$\frac{Girl}{Boy} = \frac{0.04}{0.05} = \frac{4}{5}$

Let us assume, total girls =4x and boys =5x

So,

$(4x+5x) =1800$

$9x =1800$

$x =200$

So number of girls is $(4\times200) =800$