The answer is 2
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The ratio equivalent to 49 can be expressed as 49:1. This means that for every 49 parts of one quantity, there is 1 part of another quantity. Other equivalent ratios include 98:2 or 245:5, as long as both parts of the ratio are multiplied by the same non-zero number.
an equivalent ratio is a ratio that you can both divide the top/bottom number evenly.
Multiply both numbers of the ratio, 30 to 11, by any non-zero number. You will have an equivalent ratio.
the fixed amount multiplied is called Common ratio
If you have one ratio then multiply both numbers of the ratio, x:y (or x/y), by any non-zero number. You will have an equivalent ratio.