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What is obtained when 0.00072 is converted into a simplified fraction?

Answer and explanation

Correct answer: 9/12500

The key concept is converting a terminating decimal into a fraction and then reducing it. The decimal 0.00072 has five digits after the decimal point, so its initial fraction is 72/100000. Now simplify by dividing numerator and denominator by their greatest common divisor, 8: 72 ÷ 8 = 9 and 100000 ÷ 8 = 12500. Hence 0.00072 = 9/12500, so option C is correct. Option A uses an incorrect denominator and does not represent the given place value. Option B is equivalent to 9/12500 but is not in simplest form because both terms are divisible by 2. Option D also uses the wrong power of 10. The final fraction has no common factor remaining.

Related tags

Decimal-RepresentationDecimal-To-FractionSimplificationDecimal RepresentationNumber SystemsMathematicsClass 9 Mcq

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