1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Komok [63]
3 years ago
5

A tank has a capacity of 10 gallons. When it is full it contains 15% alcohol. How many gallons must be replaced by an 80% soluti

on to goive 10 gallons of a 70% solution?
Mathematics
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

8.46 gallons needed to be replaced

Step-by-step explanation:

Let x be the alcohol amount that replaced

-Original has concentration of 15% multiply by the amount of 10 ,which is equal to (0.15×10).

-Removed has concentration of 15% multiply by the amount of x ,which is equal to (0.15 × X).

-Added has concentration of 80% multiply by the amount of X ,which is equal to (0.8× X).

-Solution has concentration of 70% multiply by the amount of 10 ,which is equal to (0.70×10).

So that, the equation will be:

Solution=Original + added - removed

7=1.5+0.8x-0.15x

7-1.5=0.65x

0.65x=55

x=55/0.65

x=8.46

8.46 gallons needed to be replaced.

You might be interested in
What can you conclude about the signs of two integers whos product i a positive and negative
KengaRu [80]

If two integers product is:

  1. <u>Positive:</u> then the integers were both negative or both positive (same sign)
  2. <u>Negative:</u> then the integers consisted of one negative and one positive (opposite signs)
7 0
3 years ago
Hello can anyone help me please
Naya [18.7K]

Answer:

5.3 to the 4th power :)

Step-by-step explanation:

7 0
3 years ago
(r/s)(3) = ?<br><br> please help.
MissTica

Answer:

\frac{3r}{s}

4 0
3 years ago
5/10 and 1/6 are equivalent ratios
CaHeK987 [17]

Answer:

1 : 5 2 : 10 3 : 15 4 : 20 5 : 25

Step-by-step explanation:

3 0
3 years ago
PLSLSLSLSLSL HELPPPPP
lisabon 2012 [21]

Answer:

100 ( 4 - π rad )

Jdnzjdhbdudhejdjejd

4 0
3 years ago
Other questions:
  • How to find midpoint of (-42,-53) and (28, -19)
    15·1 answer
  • Jane put a 12 in. tall bucket of under a leak in her sink. The bucket fills at a constant rate of 1/2 in. every 1/6 of an hour.
    13·1 answer
  • What are the roots of f(x)=x^2-48 CANT MOVE ON TILL I ANSWER
    9·1 answer
  • In trapezoid ABCD with legs AB and CD , diagonals BD ∩ AC =M so that BM:MD=1:4. Find AAMD, ACMD, and AACD if the area of AABM=8
    7·1 answer
  • Simplify the following expression -12[ 3y - 4x] - 10y
    8·2 answers
  • What kind of measurement would to describe the amount of water a pot can hold
    12·1 answer
  • Is 7/5 greater than 11?
    10·1 answer
  • Can someone please help me
    6·1 answer
  • What is 2/10 - 3/10
    14·2 answers
  • John is 36 years old now. 1/4 of his age is equal to 1/3 of sam's age. find their total age in 5 years time
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!