How many liters of a 40% iodine solution need to be mixed with 35 liters of a 20% iodine solution to
create a 35% iodine solution?
Lets say we need x liters.
After mixing we get (x+35) liters.
Total Iodine before = Total Iodine after40%*x + 20%*35 = 35%*(x+35)5%*x=35*15%x=35*3=105Answer is (d)
1) Algebra-101 2) Sequences 3) Set combinatorics 4) 3-D geometry
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