The ratios in an equivalent ratio table are 3: 12, 4: 16, and 5: 20. if the first number in the ratio is 10, what is the second number? justify your reasoning.

10:40

Step-by-step explanation:

I believe the answer would be 10/40. First, I simplified all of the given rations. You do this by finding the two numbers greatest common factor. For example, 3/12, 3 goes into 3 once and 3 goes into 12 four times. So that ratio would be 1/4. If you continue the pattern you would get 1/4 for all of them. Therefore, 10/40 would be correct since it's ratio would also be 1/4.

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12/11c

or

12

c

11

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315