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In an examination the number of successful students was 4 times the numbr of unsuccessful students If there were 35 less students nd the numbr of unsuccessful students were 9 more,then the ratio of their numbr would have been 2:1 . Find the total numbr of students

Read Solution (Total 3)

successful students 4x,unsuccessful student x.total 5x
now,total students become 5x-35 & unsuccessful students x+9 then successful students 4x-44
ratio 4x-44 / x+9=2 / 1
x=31 then total student 5x=155
9 years agoHelpfull: Yes(16) No(0)

X= 4 Y-------1
X-35= 2(y+9) ----2
From 1 and 2 we get
X= 106, Y = 26.5

Total =106+26.5 = 132.5(133)
9 years agoHelpfull: Yes(0) No(18)
the ans is- 135
9 years agoHelpfull: Yes(0) No(6)

Microsoft Other Question

There are three taps A,B and C.they can fill the tank in 10,20,and 25 hrs respectively.At first all of them are opened simultaneously.Then after 2 hrs
tap C is closed and A and B are kept running.After the 4rth hour tap B is closed.The remaining work is done by tap A alone.Find the percentage of the work done by Tap A by itself?
#include
#include
#define MAX(x,y) (x)>(y)?(x):(y)
int main()
{
int i=10;
int j=5;
int k=0;
k=MAX(i++,++j);
printf("
%d %d %d",i,j,k);
return 0;
}