Question
If the equivalent ratio of 15: b is 135:90, the value of b is __________.
- 10
- 11
- 12
- 15
Hint:
Equivalent ratios are those that can be simplified or reduced to the same value. In other words, two ratios are considered equivalent if one can be expressed as a multiple of the other.
The correct answer is: 15
Here, we have to find the value of b for which the ratios 15:b and 135:90 are equivalent ratios.
Since, 15:b and 135:90 are equivalent ratios.
So, 15⁄b = 135⁄90
=> b = (15×90)/ 135
=> b = 10.
Hence, the correct option is A.
We can also find the value of b by the method of proportion.
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