If 1/2 is subtracted from a number and then it is multiplied by 1/2, the…
2013
If 1/2 is subtracted from a number and then it is multiplied by 1/2, the number converts into 1/8. The number is
- A.
3/4
- B.
1/4
- C.
4/5
- D.
3/5
Attempted by 7 students.
Show answer & explanation
Correct answer: A
Let the number be x.
According to the problem, (x - 1/2) × 1/2 = 1/8.
Multiply both sides by 2: (x - 1/2) = 1/4.
Add 1/2 to both sides: x = 1/4 + 1/2 = 3/4.
हिन्दी उत्तर:
माना संख्या x है।
समस्या के अनुसार, (x - 1/2) × 1/2 = 1/8।
दोनों तरफ 2 से गुणा करने पर: (x - 1/2) = 1/4।
दोनों तरफ 1/2 जोड़ने पर: x = 1/4 + 1/2 = 3/4।