CAT 2019 Shift 2 Paper

Initial amount of salt in vessel A=10gms per 100ml, therefore in 500ml the amount of salt =50gms
Initial amount of salt in vessel B=22gms per 100ml, therefore in 500ml the amount of salt =110gms
Initial amount of salt in vessel C=32gms per 100ml, therefore in 500ml the amount of salt =160gms
When 100ml is trasfered from A to B, the amount of salt now in B=10+110=120gms in 600ml.
The new concentration of salt in B=120/600=20gms per 100ml.
Also, the amount of salt lef in A=50−10=40gms in 400ml.
Now, when 100ml is trasfered from B to C, the amount of salt now in C=20+160=180gms in 600ml.
The new concentration of salt in C=180/600=30gms per 100ml.
Finally, when 100ml is trasfered from C to A, the amount of salt now in A=30+40=70gms in 500ml.
Therefore, the strength of salt in A=‌

70

500

×100=14%