Question

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

Answer 1

10:40

Explanation:

3x4 = 12

4 x 4 = 16

5 x 4 = 20

so 10 x 4 = 40 (10:40)

Answer 2

10:40

Explanation:

Step 1: Reduce ratio to lowest value

3 : 12 = 1 : 4

*Divide by 3

Step 2: Solve ratio

Let 'x' represent the second number

1 : 4 = 10 : x

Multiple the left side by 10

10 : 40 = 10 : x

Therefore the second number in the ratio with 10 is 40