1.

What is a two-digit number if the ratio of the digit at ten's place to the digit at unit's place is 4 : 3 ? (I) The sum of the digits of a two-digit number is 14. (II) The digit at unit place is 75% o

Answer»

If the data in statement (I) alone is SUFFICIENT to answer the question while that in statement (II) alone is not sufficient.



Let the number be 10X + y
∴ 3x = 4y......(1)
From (I),
x + y = 14 .....(2)
Solving equations (1) and (2),
x = 8, y = 6
∴ Number = 86 From (II)
y = 75/100 x x 
∴ 3x = 4y.
Which is the same as eqn (1)



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