Question

in an examination hall there are 144 people. 1/2 of them are boys and 4/9 are girls ,the rest of them are teachers.how many students were in the hall

Answer 1

Step-by-step explanation:

students= (1/2+4/9)

= (9+8)/18

= 17/18

1----144

17/18 ---- ?

(17/18)*144=136

Answer 2

$\mathtt{Total \: People = 144}$

$\mathtt{Total \: Boys = \frac{1}{2} }$

$\mathtt{Total \: Girls = \frac{4}{9} }$

$\mathtt{Total \: Students = ( \frac{1}{2} + \frac{4}{9}) }$

$\mathtt{Total \: Students = ( \frac{9 + 8}{18}) }$

$\mathtt{Total \: Students = \frac{17}{18} }$

$\mathtt{Total \: Students = \frac{17}{18} \times 144}$

$\mathtt{Total \: Students = 17 \times 8}$

$\mathtt{Total \: Students \: = 136}$