BRAINLIEST! How much of a 70% orange juice drink must be mixed with 16 gallons of a 40% orange juice drink to obtain a mixture that is 50% orange juice?

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}