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UPPSC PCS - 2014
16.5%of 4800= ¾ of x, then x is equal to
Year Asked: 2014
A
1156
B
1056
C
1456
D
956
Correct Answer
B. 1056
Detailed Explanation
Work it in two steps. 16.5% of 4800 is 0.165 × 4800 = 792. The question says this equals three-fourths of x, so (3/4)x = 792, which gives x = 792 × 4/3 = 1056. The answer is B.
A faster route: 16.5% = 33/200, so 4800 × 33/200 = 24 × 33 = 792. Then 792 ÷ 3 = 264, and 264 × 4 = 1056.
- A) 1156 is 100 more than the correct value, typical of a slip while dividing by 3 or multiplying by 4.
- C) 1456 and D) 956 come from careless percentage arithmetic. Neither matches 792 × 4/3.
Core concept: converting a percentage to a fraction and solving a linear equation. Simplifying 16.5% to 33/200 before multiplying saves time, and this kind of quick arithmetic is useful in the CSAT section and in data interpretation.
Trap: aspirants multiply 792 by 3/4 (getting 594) instead of dividing by 3/4, which reverses the operation.
This question appeared in UPPCS 2014 GS Paper 2.
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