The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 1: 3. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is
Choose one.
A) 2 kg  B) 6.625 kg  C) 6.25 kg  D) 6.35 kg  E) 6.55 kg
sodium chloride in 100 kg = 1/4 x 100 = 25 kg   ammonium in 100 kg = 3 / 4 x 100 = 75 kg   Now 75 is 25 parts out of   (25 + 9)= 
<gadget id="calculator">  (25 + 9)</gadget>
<output>34</output>
34 parts.   Hence 9 parts= 9/25 x 75 = 27   2 kgmount to be added = 27 - 25= 
<gadget id="calculator">27 - 25</gadget>
<output>2</output>
2 Kg   2 kgNSWER:2 kg
<result>A</result>
The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 1: 3. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is