\boldsymbol{\mathbf{4 ounces water we need to add.}}
An after shave lotion contains 45% of ethyl alcohol
i.e 100% - 45% = 65% nonalcoholic
As mentioned, we have 8 ounces of fluid and that contains 45% of ethyl alcohol.
i.e
We need fluid which 70% nonalcoholic.
i.e 100 - 70 = 30% of alcohol.
Then there is already 3.6 ounces of alcohol in fluid.
As required, Let consider 3.6 ounce is 30% of alcohol.
70% must be other liquid.
That is equal to =
=
= 8.4 Ounces Of other liquid.
Then total ounces of the lotion is
= 3.6 + 8.4
= 12 ounces.
Water required to add is,
= 12 - 8
=
You bring all xs on one side then you solve as quadratic analysis.
so you can simplify into
*Note that here 4 took the negative sign and 1 took the positive sign, as you want to numbers that if multiplied will give -4 and when added will give -3, and these are (-4 and 1)*
so now you can simply say that, for the equation to equal 0, x should be -1 or 4.
You can always substitute to make sure of your calculations.
Hope this helps.
Answer:
yo soy de
Step-by-step explanation:
The answer is D. 71/4=11.75
4 goes into 71, 11 times and 3/4= 0.75. Hope that makes sense
Answer:
Step-by-step explanation:
35%+28%=63%
37% of the cars were tan