1.

2. Find a in each of the following proportiona) 2:85::57:95 b) 2:6::55:11c) 7:12 :: 0:24 d) 30:40 :: 45 : a ​

Answer»

Step-by-step EXPLANATION:

D)30:40::45:a

30×a=40×45

a=(40×45)/30

a=60



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