A person spends 25% of his income on rent, 20% on food, and 15% on transport. If remaining income is ₹8,000, what is his total income?
A ₹16,000
B ₹18,000
C ₹20,000
D ₹25,000
Correct Answer:
C. ₹20,000 Explanation:
Total spent = 25% + 20% + 15% = 60%. Remaining = 40% = ₹8,000. Total income = 8,000/0.40 = ₹20,000
A factory's production increased from 2,000 units to 2,500 units. What is the percentage increase?
Explanation:
Increase = 2,500 - 2,000 = 500. Percentage = (500/2,000) × 100 = 25%
Q.403
Easy
A sum becomes ₹5,500 in 3 years and ₹6,000 in 5 years at simple interest. Find the principal amount.
A ₹4,000
B ₹4,500
C ₹3,750
D ₹4,250
Correct Answer:
A. ₹4,000 Explanation:
SI for 2 years = 6000 - 5500 = 500. SI per year = 250. SI for 3 years = 750. Principal = 5500 - 750 = 4000
Q.404
Easy
What rate of simple interest per annum will ₹7,200 amount to ₹8,640 in 2 years?
A 8% p.a.
B 10% p.a.
C 12% p.a.
D 15% p.a.
Correct Answer:
B. 10% p.a. Explanation:
SI = 8640 - 7200 = 1440. Using SI = (P × R × T)/100; 1440 = (7200 × R × 2)/100; R = 10%
Q.405
Easy
In how many years will ₹9,000 become ₹11,700 at 15% simple interest per annum?
A 1.5 years
B 2 years
C 2.5 years
D 3 years
Correct Answer:
B. 2 years Explanation:
SI = 11700 - 9000 = 2700. Using T = (SI × 100)/(P × R) = (2700 × 100)/(9000 × 15) = 2 years
Q.406
Easy
A merchant invested ₹24,000 at 8.5% simple interest. How much interest will he earn in 4 years?
A ₹8,160
B ₹8,320
C ₹8,480
D ₹8,640
Correct Answer:
A. ₹8,160 Explanation:
SI = (24000 × 8.5 × 4)/100 = 8160
Q.407
Easy
A sum of money at simple interest becomes double of itself in 10 years. At what rate per annum is the interest charged?
A 8% p.a.
B 10% p.a.
C 12% p.a.
D 15% p.a.
Correct Answer:
B. 10% p.a. Explanation:
If amount = 2P, then SI = P. Using P = (P × R × 10)/100; 100 = 10R; R = 10% p.a.
Q.408
Easy
If ₹5,000 is invested at 12% simple interest for 2.5 years, what will be the total amount?
A ₹6,500
B ₹6,250
C ₹6,750
D ₹7,000
Correct Answer:
A. ₹6,500 Explanation:
SI = (5000 × 12 × 2.5)/100 = 1500. Amount = 5000 + 1500 = 6500
Q.409
Easy
A lends ₹20,000 to B at 8% simple interest per annum. If B returns the total amount after 5 years, how much will B pay?
A ₹28,000
B ₹27,000
C ₹29,000
D ₹26,000
Correct Answer:
A. ₹28,000 Explanation:
SI = (20000 × 8 × 5)/100 = 8000. Amount = 20000 + 8000 = 28000
Q.410
Easy
At what rate will ₹4,000 earn ₹800 as simple interest in 2 years?
A 10% p.a.
B 12% p.a.
C 15% p.a.
D 20% p.a.
Correct Answer:
A. 10% p.a. Explanation:
Using SI = (P × R × T)/100; 800 = (4000 × R × 2)/100; R = 10% p.a.
