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Answer:  # siblings        ratio          fraction         decimal         percent0               3 : 20          3/20                 .15                   15%1                 1 : 5              1/5                   .20                 20%2                3 : 8             3/8                  .375               37.5%3                6 : 25           6/25              0.24                 24%4+              7 : 200        7/200             0.035              3.5%Step-by-step explanation:I'll use row 3 as an example to show you how to do all these.  # siblings        ratio          fraction         decimal         percent3                                                           0.24                        To find fractionput number over 100 and just simplify as much as you can.24/100 = 12/50 = 6/25To find ratioratios are the same as fractions, but instead of the fraction bar or slash, you have a colon.this one would look like   6 : 25  as a ratio.To find decimalDIVIDE the fraction or ratio (using a calculator if allowed, or by hand otherwise)6/25 = 0.24To find percenttake the decimal once you find it, and move the decimal point to the right by 2 digits. That's the percent.0.24 ==> 24%