Question

in a chemical experiment two NaOH bottles are used. Bottle A contains salt snd water in the ratio 7:3 and bottle B contains salt ans water in the ratio 4:3 in what proportion should the properties be taken from botlles A and B to get the ratio 2:1?​

Answer 1

Answer:

20:7

Step-by-step explanation:

Let A:B is the required ratio

Total salt =[ 7A/(7+3)] + [4B/(4+3)]

=(7A/10)+(4B/7)

Total water = [3A/(7+3)]+ [3B/(4+3)]

=(3A/10) + (3B/7)

So, [(7A/10)+(4B/7)]/[(3A/10)+(3B/7)] = 2/1

Or, (7A/10)+(4B/7) = 2[(3A/10)+(3B/7)

Or, (7A/10)–(6A/10) =(6B/7)–(4B/7)

Or, A/10=2B/7

Or,7A= 20B

Or, A/B = 20/7

Or, A:B = 20:7