Civil Services TNPSC Group 1 (New Syllabus) Mock Test 2025 Quantitative Aptitude Interest Simple Interest
What is the ratio of the simple interest earned on a certain amount at the rate of 21% per annum for 8 years to that earned on the same sum at the same rate for 21 years?
1
8 ∶ 21
2
21 ∶ 5
3
5 ∶ 21
4
21 ∶ 8