In a tube containing 1 ml of a 15 dilution of A and 4 ml of
In a tube containing 1 ml of a 1:5 dilution of A, and 4 ml of a 1:100 dilution of B:
What is the final dilution of substance A?
What is the final dilution of substance B?
Solution
What is the final dilution of substance A?
When 1mL substance A is mixed with 4 mL of Substance B, four dilution of substance A happens.
original=1/5
Further =1/4
Final = 1/5 x1/4 = 1/20 fold dilution
What is the final dilution of substance B?
When 4mL substance B is mixed with 1 mL of Substance A, = times
original=1/100
Further =4/5
Final = 1/100 x 4/5 = 4/500 fold dilution

