simple algebra question

Mathematics
Tutor: None Selected Time limit: 1 Day

If 3/4 = a/36 = 36/b, what is the value of a+b

Aug 13th, 2014

3/4=a/36

cross multiplying 4a=3*36=108

4a=108

a=27

3/4=36/b

Cross multiplying 3b=4*36=144

3b=144

b=48

a=27; b=48

Aug 13th, 2014

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