Addition is the inverse of subtraction and multiplication is the inverse of division.
Ex: 1+1 = 2, 2-2 = 0
Multiplying 20×1/2 is the same as dividing 20 by 2. Which means the answer is 10.
200+50+4=254 is the answer
30÷4=7.5
45÷7.5=6
you will need about 6 gallons of water to fill it.
Here! not sure if it's right but i'm pretty confident. boom