Home / Compound Interest Quiz For Upcoming Exams Answers

Compound Interest Quiz For Upcoming Exams Answers

150+ RRB NTPC Previous Solved Papers PDF  Free Download Now
Download Quant Power Bank (1000+ Pages)  Free Download Now
RRB Junior Engineer Complete Free Study Material PDF Free Download Now
IB Security Assistant Complete Free Study Material PDF Free Download Now
SSC JE Complete Free Study Material PDF  Free Download Now
SSC CGL,CPO,GD 2018 Study Material & Book Free PDF Free Download Now

 

Print Friendly, PDF & Email

Answers :-

1. (a) Principal = Rs. 2550,
Rate¿ = 4¿ = 26/25 (26 → Installment, 25 →
Principal)
Time = 25× 26 : 26× 26
IInd year 625 : 676
Note: Installment will be same in both cases.
According to the question,
1275 units = Rs. 2550
1 unit = Rs. 2550/1275
676 units = Rs. 2550/1275 × 676
Rs. 1352

2.(d)

3. (d) 540 = P × R × 3/100
PR = = 18000 …………… (i)
CI = P [(1 + R/100)2 – 1] 376.20 = P [(1 + R/100)2 – 1] = P [R2/(100)2 + 2PR/100] = 18000 × R/(100)2 + 2× (18000/100)
= 376.20 = 18 × R/10 + 360
= 376.20 – 360 = 18R/10
R = 162/18 = 9%
From (i) P × R = 18000
P × 9 = 18000
P = Rs. 2000

4. (a) Rate 8 % = 35/4% = 7/80 = 2/25

5. (d) Amount after three years = Rs. 2662
Amount after two years = Rs. 2420
→ Net interest earned in the 3rd. = 2662 – 2420 =
Rs. 242
→ Rate of interest (r) = 242/2420× 100 = 10¿
Thus 2nd year’s amount is principal for 3rd year

6. (d) Given Amt. = Rs. 12100
R% = 10% = 1/10
Time = 2 years
Total amount for 2 year
= 10 + 10 + 1 + 10 = 121
→ 121 units → Rs. 12100
→ 1 unit → 100
→ Principal = 100 unit
= 100 × 100 = 10000

7. (d) Compound Interest = Rs. 1361,
Time = 3 years, Rate % = 5 % = 1/20

According to the question,
1261 units = Rs. 11261
1 unit = Rs. 1261/1261 = Rs. 1
8000 units = 8000 × 1 = Rs. 8000
Thus, Hence Required Principal = Rs. 8000

8. (c) Rate% = 4% time = (t1)= 1 year
Amount = Rs. 7803
When interest is compounded half-yearly
New Rate% = 4/2 = 2%
Time = 1 × 2 = 2 years
Required Rate% for 2 years CI
= 2 + 2 + (2 × 2)/100 = 4.04%
According to the question,
(100 + 4.04)% of sum = Rs. 7803
Sum = 7803/104.04 × 100 = Rs. 7500
Alternate:
Time = 2 years,
Rate% = 4/2, 2% = 1/50
According to the question,
2601 units = Rs. 7803/2601 = Rs. 3
2500 units = Rs. 3 × 2500 = 7500 Rs.
Thus, Hence Sum = Rs. 7500

9. (b)
Since Installment is equal hence multiply equation (i)
by 21
→ total principal = 420 + 400 = 820 units
→ 820 units → Rs. 15
→ 441 units → Rs. 6615
→ Each installment
= Rs. 6615

10. (b) Principal = Rs. 21000
Rate = 10¿ = 1/10 = 11/10 (11 → Installment, 10
→ Principal)

Download English Power Book (2000+ Pages)  Free Download Now
Reasoning & GI Booster -Power Bank Book (1200+ Pages) Free Download Now

 

error: