Question
Which of the following ratios are in proportion?
Answer: Option B
:
B
Two ratios are said to be in proportion if they are equivalent or equal.
Here,
45=4×35×3=1215
Hence,4 : 5 :: 12 : 15, are in proportion.
Also product of 1st and 4thterm should beequal toproduct of 2ndand 3rdterm, which is only satisfied by4 : 5 :: 12 : 15, i.e.,
4×15=5×12=60.
For rest of them theproduct of 1st and 4thterm is notequal to the product of 2ndand 3rdterm.
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:
B
Two ratios are said to be in proportion if they are equivalent or equal.
Here,
45=4×35×3=1215
Hence,4 : 5 :: 12 : 15, are in proportion.
Also product of 1st and 4thterm should beequal toproduct of 2ndand 3rdterm, which is only satisfied by4 : 5 :: 12 : 15, i.e.,
4×15=5×12=60.
For rest of them theproduct of 1st and 4thterm is notequal to the product of 2ndand 3rdterm.
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