Question

A mixture consists of only two components a and b.in 60 litres of this mixture the components a and b are present in the ratio 2:1. What quantity of components b has to be added to this mixture so that the new ratio is 1:2?

Answer 1

Answer:

60 litres.

Step-by-step explanation:

Original volume = 60 litres.

a and b are ratio 2: 1 i.e.  2/3 parts of a and 1/3 parts of b

Component a = 2/3 * 60 = 40 litres.

Component b = 1/3 * 60 = 20 litres.

Now for the ratio to be 1 : 2,

i.e Component A /Component B  = 1/2

let x be the quantity of b to be added.

=> 40 / (20 + x) = 1/2

(20+x) * 1  = 40 * 2

20 + x = 80

x = 60.

Hence 60 litres of quantity b should be added

 

Answer 2

Answer:

60 litres

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