Civil Service Exam Reviewer · Ratio and Proportion · easy

Simplify the ratio 21 : 28.

1. 4 : 3
2. 3 : 4
3. 6 : 9
4. 4 : 5

Answer

B. 3 : 4

Solution

Divide both terms by their GCF, 7: 3 : 4.

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