In a lab, a 30% acid solution is being mixed with a 5% acid solution to create a 10% acid solution. what is the ratio of the amount of the 30% solution to the amount of 5% solution used to create the 10% solution? 1: 3 1: 4 1: 5 1: 6

  1 : 4

Step-by-step explanation:

Let x represent the amount of 30% solution for 1 unit of 5% solution. Then the amount of acid in the mix is ...

  0.30x + 0.05·1 = 0.10·(x +1)

  0.30x + 0.05 = 0.10x + 0.10 . . . . eliminate parentheses

  0.20x = 0.05 . . . . . . . . . . . . . . . . subtract 0.05+0.10x

  x = 0.05/0.20 = 1/4

That is, the ratio x : 1 is 1 : 4.

step-by-step explanation:

it's is b