How many liters of 10% acid solution should be mixed with 30 liters of a 50% acid solution to get a mix that a 20% acid?

90 liters of 10% acid solution should be mixed with 30 liters of a 50% acid solution to get a mix that is 20% acid

An equation is used to show the relationship between two or more variables and numbers.

Let x represent the amount of acid solution in liters. Hence:

(x * 10%) + (30 * 50%) = (x + 30) * 20%

0.1x + 15 = 0.2x + 6

0.1x = 9

x = 90 liters

90 liters of 10% acid solution should be mixed with 30 liters of a 50% acid solution to get a mix that is 20% acid

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$18 was the price of the t-shirt

step-by-step explanation:

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40