In first 10 years, SI =1001500×5×10=750. New principal =1500+750=2250. Need 750 more interest to reach 3000. Using SI: 750=1002250×5×t, giving t=320 years. Total time =10+320=350=1632 years.
CUET UG 2023 — General Test Arithmetic
A sum of Rs. 1500 is invested at 5% p.a. simple interest. If the interest is added to the principal after every 10 years, the amount will become Rs. 3000 after :
Held on 5 Jun 2023 · Verified 13 Jul 2026.
1521 years
1632 years
18 years
20 years
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