A mixture contains 2/5 of element A and 3/5 of element B. When 5ml of A is added to the mixture, the proportion of B in the mixture changes to 1/ What amount of A was originally present in the mixture before the addition was made?

A mixture contains 2/5 of element A and 3/5 of element B. When 5ml of A is added to the mixture, the proportion of B in the mixture changes to 1/ What amount of A was originally present in the mixture before the addition was made?

A 1 ml

B 1.5 ml

C 2.5 ml

D 6 ml

Solution

Correct Answer: Option A