Annabel has 25 ounces of a 20% boric acid solution which she wishes to dilute to a 10% solution. how much water does she have to add in order to obtain the 10% solution?

Annabel will add 25 ounces of water in 20 % boric solution.

Step-by-step explanation:

Annabel has 25 ounces of a 20% boric acid solution.

She wishes to dilute this solution to prepare a 10% solution.

We have to calculate the amount of water to be added to obtain 10% solution.

Let she adds x ounce of water with the 20% boric acid solution.

So the equation will be

Amount of 20% solution × strength = Amount of 10% solution × strength

25 × = (25 + x) ×

25 × 0.20 = (25 + x)×0.10

5 = 2.5 + 0.10x

5 - 2.5 = 0.1x

2.5 = 0.1x

x =

x = 25 ounces

Therefore, Annabel will add 25 ml of water.

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are

its 8

step-by-step explanation: