Someone is mixing a liquid containg 4% reactor fuel with a liquid contains 20% reactor fuel to create a 6 ounce liquid containg 8% reactor fuel. how many ounces of the 4% liquid must she use?

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

what are the

4932,9180,7625 are divisible by 9