Answer:. 30 : 48
40:64
Step-by-step explanation: The hint is in the table where the rows highlighted in pink, multiples of 5 and 8, contain the values of the original given ratio, 10:16
Equivalent ratios include any of the corresponding values in columns AND that are in the pink rows.
5:8, 10:16, 15:24, 20:32 . . .
We can see the pattern; pairs of multiples of the factors of the numbers in the original ratio are equivalent ratios.