The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 1:4. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is
Select the correct option.
A) 5 kg B) 6.625 kg C) 6.25 kg D) 6.35 kg E) 8.8 kg
sodium chloride in 100 kg = 1/5 x 100 = 20 kg   ammonium in 100 kg = 4/5 x 100 = 80 kg   Now 80 is 25 parts out of   (25 + 9)= 
<gadget id="calculator">  (25 + 9)</gadget>
<output>34</output>
34 parts.   Hence 9 parts= 9/25 x 80 = 28.8   Amount to be added = 28.8 - 20= 
<gadget id="calculator">28.8 - 20</gadget>
<output>8.8</output>
8.8 Kg   ANSW8.8 kgR:8.8 kg
<result>E</result>
The ratio of sodium chloride to ammonium in 100 kg of mixed ammonium normally used by three chemists is 1:4. The amount of sodium chloride to be added to 100 kg of mixed ammonium to make the ratio 9 :25 is