The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 3: 14. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is
Pick one
A) 12 kg	B) 6.625 kg	C) 6.25 kg	D) 6.35 kg	E) 6.55 kg
sodium chloride in 100 kg = 3/17 x 100 = 17.64 kg   ammonium in 100 kg = 14/17 x 100 = 82.35 kg   Now 82.35 is 25 parts out of   (25 + 9)= 
<gadget id="calculator">  (25 + 9)</gadget>
<output>34</output>
34 parts.   Hence 9 parts= 9/25 x 82.35 =29.64   12 kgmount to be added = 29.64 - 17.64= 
<gadget id="calculator">29.64 - 17.64</gadget>
<output>12</output>
12 Kg   12 kgNSWER:12 kg
<result>A</result>
The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 3: 14. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is