2 years ago

How many gallons of a 20% salt solution must be mixed with 4 gallons of a 30% salt solution to make a 25% salt solution?

1 answer:

6 0

Since 25% is smack in the middle between 20% and 30%, it will take equal volumes of ech to make a 25% solution.

Since 4 gallons of 30% solution was used, so 4 gallons of 20% solution will be needed.

You might be interested in

PLEASE HELP..................James is paid $18 an hour at his new job. He wishes to graph his total pay T, as a function of the

Molodets [167]

450 AND 50.................

7 0

3 years ago

Read 2 more answers

Delia went to a market to buy 4.5 pounds of sliced fruit in a container she paid with a $20 bill and a $5 bill and received $4.6

andreyandreev [35.5K]

20+5=25 then 25-4.67=20.33 so then you do 20.33/4.5=4.5 so the cost for one pound of fruit is $4.57. Hope this helps :)

4 0

3 years ago

Write the rules for factoring. x method, difference of squares

ch4aika [34]

Difference-of-Squares Formula:

For a difference of squares a2 – b2, the factorization is:

(a – b)(a + b)

6 0

3 years ago

What is the measure of an exterior angle of a regular 7-sided polygon? The answer must be a decimal.

ale4655 [162]

1 interior angle = [(n-2)180]÷n
= [(7-2)×180]÷7
= 900÷7 = 128.57 °
an exterior angle = 180 - interior
= 180-128.57
= 51.43°

8 0

2 years ago

What is 37/40 in simplest form

disa [49]

Answer:

It is already explained in simplest form

Step-by-step explanation:

It can be written as 0.925 in decimal form (rounded to 6 decimal places).

7 0

3 years ago