Question

please solve the answers ​

Answer 1

Answer:

Given :

$\sf{Number\:of\:students\:above\:average=\dfrac{1}{6}}$

$\sf{Number\:of\:students\:who\:are\:average=\dfrac{1}{4}}$

$\sf{Rest\:are\:below\:average}$

$\sf{Total\:number\:of\:students\:in\:all=48}$

To find :

$\textsf{Number of students below average }$

Concept :

First fo the sum of the above average students with the average students . Then , multiply the sum with total number of students in all . After that subtract it with number of students in all .

So , now the equation will form like this :

$\sf{\boxed{48\times(\dfrac{1}{6}+\dfrac{1}{4})}}$

Solution :

$\sf{\implies{48\times(\dfrac{1}{6}+\dfrac{1}{4})}}$

L.C.M of 6 and 4 is 12 .

$\sf{\implies{48\times(\dfrac{2+3}{12})}}$

$\sf{\implies{\cancel{48}\times\dfrac{5}{\cancel{12}}}}$

$\sf{\implies{4\times5}}$

$\sf{\implies{20\:students}}$

So , total number of students who are above average and average are 20 students .

Now , number of students who are below average -:

$\sf{\implies{48-20\:students}}$

$\sf{\implies{28\:students}}$

In fraction :

$\sf{\implies{\dfrac{5}{12}=\dfrac{12-5}{12}}}$

$\sf{\implies{\dfrac{7}{12}\:students}}$

Answer :

So , number of students which are below average are -:

In number :

$\sf{\implies{28 students }}$

In fraction :

$\sf{\implies{\dfrac{7}{12}\:students}}$