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KailiamsKARR
KailiamsKARR KailiamsKARR
  • 14-06-2016
  • Mathematics
Answered

  1. Which one of the following statements expresses a true proportion?
A3 : 5 = 12 : 20
B14 : 6 = 28 : 18
C42 : 7 = 6 : 2
D2 : 3 = 3 : 2

Verified Answer :

whiskeyo
whiskeyo whiskeyo
  • 14-06-2016

Only ratio in A. is the same in both statements, as multiplying or dividing both of them by the same factor will not make a difference.

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HomertheGenius
HomertheGenius HomertheGenius
  • 21-06-2016

If we write the ratios vertically and then cross multiply:
A) 320 = 5 15
     60 = 60
B) 14 18 = 6 28
     252 ≠ 168
C) 42 2 = 7 6
     84 ≠ 42
D)  2 2 = 3 3
      4 ≠ 9
Answer: A)

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