A sum of money at simple interest amounts to Rs.815 in 3 years and to Rs.854…
2025
A sum of money at simple interest amounts to Rs.815 in 3 years and to Rs.854 in 4 years. The sum is :
- A.
698
- B.
679
- C.
567
- D.
435
Attempted by 76 students.
Show answer & explanation
Correct answer: A
Key idea: find the annual simple interest as the difference between the amounts for 4 years and 3 years.
Step 1: Annual interest = 854 − 815 = 39.
Step 2: Interest for 3 years = 39 × 3 = 117.
Step 3: Principal = amount after 3 years − interest for 3 years = 815 − 117 = 698.
Answer: Rs.698