Mr.Rathor invested two thirds of his money at 6%S.I.and remaining portion at 11/2 S.I.If the total investment was Rs.45,000 how much did he earn after 3 years.
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Given :-
- Mr. Rathor invested (2/3) of his money at = 6% S.I.
- Remaining portion at = (11/2)% S.I.
- Total investment = Rs.45,000 .
To Find :-
- How much did he earn after 3 years ?
Solution :-
Case 1) :-
- Principal = (2/3) of 45000 = Rs.30000
- Rate = 6% .
- Time = 3 years.
we know that,
- SI = (P * R * T)/100
putting values we get,
→ SI = (30000 * 6 * 3)/100
→ SI = Rs.5400.
Case 2) :-
- Principal = (1/3) of 45000 = Rs.15000
- Rate = (11/2)% .
- Time = 3 years.
so,
→ SI = (15000 * 11 * 3)/(100 * 2)
→ SI = Rs.2475 .
therefore,
→ Mr. Rathor earn from both investment = 5400 + 2475 = Rs.7875 (Ans.)
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