Q. Write the repeating decimal as a fraction..48484848
Denote Repeating Decimal: Let's denote the repeating decimal 0.48484848… by x.x=0.48484848…
Convert to Fraction: To convert this repeating decimal into a fraction, we first express it as an infinite sum of its repeating parts. x=0.48+0.0048+0.000048+…
Express as Geometric Series: Notice that each term is 100 times smaller than the previous term. This is a geometric series with the first term a=0.48 and the common ratio r=1001.
Apply Sum Formula: The sum of an infinite geometric series can be found using the formula S=(1−r)a, where S is the sum, a is the first term, and r is the common ratio.
Express First Term as Fraction: Before we apply the formula, we need to express the first term as a fraction. The first term a=0.48 can be written as 10048, which simplifies to 2512.
Apply Formula for Sum: Now we can apply the formula for the sum of an infinite geometric series:x=1−rax=1−10012512
Simplify Denominator: Simplify the denominator: 1−(1001)=100100−1001=10099
Substitute Values: Now we can substitute the values into the formula: x=2512/10099
Divide by Fraction: To divide by a fraction, we multiply by its reciprocal: x=2512×99100
Multiply Numerators and Denominators: Multiply the numerators and denominators: x=(12×100)/(25×99)x=1200/2475
Simplify Fraction: Simplify the fraction by finding the greatest common divisor (GCD) of 1200 and 2475, which is 25. x=251200/252475x=9948
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