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Answer 1 · 2016-12-31T14:58:58

#2 1/2:1# is the same as # 5" ":" "2#

This is the ratio #2 1/2 : 1# which can also be written as #2.5 :1#

However, both of these forms are not written in correct ratio form which only uses whole numbers.

#2 1/2 : 1# can be written as #5/2 : 1#

Multiplying both sides by 2 will solve the problem of the #1/2#

#5/2 xx2 " ":" " 1 xx2#

gives the ratio #" "5" " :" "2#

For the decimal, multiplying by 10 will get rid of the decimal.

#2.5 xx 10" " :" " 1 xx10#

#25 " ":" " 10" "larr# divide both by 5

#5" ":" "2# is the ratio