the average salary of the employees in a office is rs. 120 / month. the avg salary of officers is rs. 460 and of non officers is rs 110. if the no. of officers is 15, then find the no of nonofficers in the office.
Choose one.
A) 400	B) 420	C) 430	D) 450	E) 510
<gadget id="calculator">15 * 460</gadget>
<output>6_900</output>

<gadget id="calculator">15 * 120</gadget>
<output>1_800</output>

<gadget id="calculator">6_900 - 1_800</gadget>
<output>5_100</output>

<gadget id="calculator">120 - 110</gadget>
<output>10</output>

<gadget id="calculator">5_100 / 10</gadget>
<output>510</output>

<result>E</result>
the average salary of the employees in a office is rs. 120 / month. the avg salary of officers is rs. 460 and of non officers is rs 110. if the no. of officers is 15, then find the no of nonofficers in the office.
divide(subtract(multiply(15, 460), multiply(15, 120)), subtract(120, 110))
"let no . of non - officers be x 15 * 460 + x * 110 = ( x + 15 ) 120 x = 510 e"