Question
Which is the least number, which when subtracted from both the numerator and the denominator of the ratio 8070, gives 1311?
Answer: Option C
:
C
Solving conventionally,
Let x be the required number
80−x70−x=1311
880 – 11x = 910 – 13x
2x = 30
x= 15
Shortcut:- Use answer options. Always start with the middle answer option
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:
C
Solving conventionally,
Let x be the required number
80−x70−x=1311
880 – 11x = 910 – 13x
2x = 30
x= 15
Shortcut:- Use answer options. Always start with the middle answer option
Was this answer helpful ?
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