Let x represent the number of liters of 50% acid Theresa puts into the mix. The the number of liters of 30% acid will be (420-x). The total amount of acid in the final solution will be ...
0.50x + 0.30(420-x) = 0.45(420)
0.20x + 126 = 189 . . . . . . . . . . . . . . . simplify
0.20x = 63 . . . . . . . . . . . . . . . . . . . . . subtract 126
x = 63/0.20 = 315 . . . . . . . . . . . . . . . liters of 50% solution
(420-x) = 420-315 = 105 . . . . . . . . . liters of 30% solution
Theresa should mix ...
105 liters of 30% solution
315 liters of 50% solution
Are you sure you didn’t word this wrong?
if you didn’t, the answer would be 0.11627906976
if you meant, what’s 43 divided by 5 then the answer would be 8.6
So, 420 is the smallest positive integer with 4 prime factorizations in the E-zone.
3.600 *38=136800/12=11400/9=1266.66666667/3=422.222222223 will be the answers
