15% of 20 gal = 0.15 * 20 gal = 3 gal, so the solution contains 3 gal of salt.
If we add <em>x</em> gal of water to the solution, we end up with (20 + <em>x</em>) gal of solution. We want the new mixture to have a concentration of 10%, or
10% of (20 + <em>x</em>) gal = 0.1 * (20 + <em>x</em>) gal = 2 + 0.1<em>x</em> gal
of salt.
The amount of salt in the tank hasn't changed. Solve for <em>x </em>:
2 + 0.1<em>x</em> = 3
0.1<em>x</em> = 1
<em>x</em> = 10 gal
Answer:
The ratio of apples to peaches is 2 to 9.
Step-by-step explanation:
For every 1 apple, there are 3 bananas.
For every 3 peaches, there are 2 bananas.
To compare apples to peaches, we need to make the bananas in each of the proportions equal.
(1 apple = 3 bananas ) x 2 --> 2 apples= 6 bananas
(3 peaches = 2 bananas) x 3 --> 9 peaches= 6 bananas
Now that the bananas are equal and the other fruits are proportionate to the number of bananas, we can see that for every 2 apples there are 9 peaches.
Answer:
5
Step-by-step explanation:
320 / 64 = 5
Answer:
Nine thousandth
Step-by-step explanation:
Only the nine thousandth is underlined I think, therefore you did not have to write out the words for the numbers before it
