Compound Interest on ₹10000 at 10% per annum for 2 years, compounded annually:
A
₹2100
B
₹2000
C
₹1900
D
₹1800
Explanation:
A = P(1 + r/100)^n = 10000(1.1)^2 = 10000 × 1.21 = 12100. CI = 12100 - 10000 = ₹2100
Simple Interest on ₹5000 at 8% per annum for 2.5 years is:
A
₹900
B
₹1000
C
₹1200
D
₹1500
Explanation:
SI = (P × R × T)/100 = (5000 × 8 × 2.5)/100 = 100000/100 = ₹1000
A boat's speed in still water is 15 km/h and the speed of current is 3 km/h. If the boat travels 36 km upstream and returns, what is the total time taken?
A
4 hours
B
5 hours
C
5.5 hours
D
6 hours
Correct Answer:
B. 5 hours
Explanation:
Upstream speed = 15-3 = 12 km/h. Downstream speed = 15+3 = 18 km/h. Time upstream = 36/12 = 3 hours. Time downstream = 36/18 = 2 hours. Total = 5 hours
If the cost price of an article is ₹800 and it is sold at 25% profit, what is the selling price?
A
₹900
B
₹950
C
₹1000
D
₹1100
Explanation:
Profit = 25% of 800 = 200. Selling Price = 800 + 200 = ₹1000
A train 240m long crosses a platform 360m long in 30 seconds. What is the speed of the train in km/h?
A
70.2 km/h
B
72 km/h
C
75.6 km/h
D
80 km/h
Correct Answer:
B. 72 km/h
Explanation:
Total distance = 240 + 360 = 600m. Time = 30 seconds. Speed = 600/30 = 20 m/s = 20 × 3.6 = 72 km/h
Q.96
Easy
A fruit seller buys mangoes at 4 for ₹10 and sells at 5 for ₹14. What is the profit percentage?
Explanation:
CP per mango = 10/4 = 2.5. SP per mango = 14/5 = 2.8. Profit = 0.3. Profit% = (0.3/2.5) × 100 = 12%
Q.97
Easy
A retailer marks articles 40% above cost price but gives 20% discount on marked price. What is the net profit percentage?
Explanation:
Let CP = 100. MP = 140. After 20% discount, SP = 140 × 80/100 = 112. Profit% = 12%
Q.98
Easy
A vendor buys oranges at ₹8 per dozen and sells them at ₹1 per orange. What is his profit percentage?
Explanation:
CP per orange = 8/12 = ₹2/3. SP per orange = ₹1. Profit = 1 - 2/3 = ₹1/3. Profit% = (1/3)/(2/3) × 100 = 50%
Q.99
Easy
A merchant sold goods for ₹3,000 at a gain of 25%. What is the cost price?
A
₹2,200
B
₹2,400
C
₹2,500
D
₹2,600
Correct Answer:
B. ₹2,400
Explanation:
SP = CP × 1.25. 3000 = CP × 1.25. CP = 3000/1.25 = ₹2,400
Q.100
Easy
A shopkeeper marks goods 25% above cost price and gives a discount of 10%. What is his net profit percentage?
A
10%
B
12.5%
C
13.5%
D
15%
Explanation:
Let CP = 100. MP = 125. SP = 125 × 0.90 = 112.5. Profit% = (12.5/100) × 100 = 12.5%
