IBPS SO Prelims Exam Model Paper 6

Let the quantity of solution A and B mixed be ‘x’ and ‘y’ units respectively
% of salt in solution A = 20%
% of salt in solution B = 50%
% of salt in final solution = 30%
Hence, we can write,
⇒ 20x + 50y = 30(x + y)
⇒ 30x - 20x = 50y - 30y
⇒ 10x = 20y
⇒ x = 2y
⇒

x

y

= 2
∴ The required ratio is 2 ∶ 1