To find an equivalent ratio to 75:7:5, you can multiply or divide all parts of the ratio by the same number.
For example, if we multiply each part of the ratio by 2, we get:
\[ 75 \times 2 : 7 \times 2 : 5 \times 2 = 150 : 14 : 10 \]
So, 150:14:10 is an equivalent ratio to 75:7:5.