Solve for the variable 10/8=n/10

1 answer:

8 0

This exercise is asking you to find the value of n or solve for n, to do so you have to isolate or leave n alone by doing different mathematical operations according to the given equation.

The given equation is $\frac{10}{8}= \frac{n}{10}$ , which is a one step equation meaning that in order to solve for n you have to perform only one mathematical operation, in this case multiplication.

$\frac{10}{8}= \frac{n}{10}$
$n= \frac{25}{2}$ or $12.5$

The value of "n" in this equation is $\frac{25}{2}$ or $12.5$ .

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A Chemist needs to mix a 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters

Nuetrik [128]

8 litres (amount of 20% solution needed) and 7 litres for (amount of 50% solution needed)

<u>Step-by-step explanation:</u>

Let consider ‘x’ for 20% acid solution and (15 – x) for 50% acid solution. And so, the equation would be as below,

20% in x + 50% in (15 – x) = 15 litres of 34%

Convert percentage values, we get

0.20(x) + 0.50 (15 – x) = 15 (0.34)

0.20 x + 7.5 – 0.50 x = 5.1

-0.3 x + 7.5 = 5.1

0.3 x = 7.5 – 5.1