How much water must be added to a gallon of 10% saline solution to create a 2% solution?

There is 1 gallon of 10% solution.. There is 0% saline in water.. The equation is (0.1)(1)+0.02(x+1) so therefore answer is 4 gallons

Six people to the minimal staar

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)