Compare 20/30 and 25/40
20/30 is greater than 25/40
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
20/30 = 20 × 4/30 × 4 = 80/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
25/40 = 25 × 3/40 × 3 = 75/120 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 80/120 > 75/120 or 20/30 > 25/40
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