A man buys an article for ₹800 and sells it at a 25% profit. What is the selling price?
A
₹900
B
₹1000
C
₹1200
D
₹1400
Explanation:
Selling Price = Cost Price + Profit = 800 + (25% of 800) = 800 + 200 = ₹1000
Two pipes A and B can fill a tank in 20 hours and 30 hours respectively. If both pipes are opened together, in how many hours will the tank be filled?
A
10 hours
B
12 hours
C
15 hours
D
18 hours
Correct Answer:
B. 12 hours
Explanation:
Work done by A in 1 hour = 1/20. Work done by B in 1 hour = 1/30. Combined = 1/20 + 1/30 = 5/60 = 1/12. Time = 12 hours
Simple Interest on ₹5000 at 8% per annum for 2 years is?
A
₹400
B
₹600
C
₹800
D
₹1000
Explanation:
SI = (Principal × Rate × Time)/100 = (5000 × 8 × 2)/100 = 80000/100 = ₹800
The LCM of 18, 24, and 36 is?
Explanation:
18 = 2 × 3^2, 24 = 2^3 × 3, 36 = 2^2 × 3^2. LCM = 2^3 × 3^2 = 8 × 9 = 72
An article is sold at ₹1200 with a loss of 20%. What was the cost price?
A
₹1400
B
₹1500
C
₹1600
D
₹1800
Explanation:
Selling Price = Cost Price × (1 - Loss%). 1200 = CP × 0.8. CP = 1200/0.8 = ₹1500
If HCF(a, b) = 15 and LCM(a, b) = 450, and a = 75, find b.
Explanation:
HCF × LCM = a × b. 15 × 450 = 75 × b. 6750 = 75b. b = 90
Two trains traveling at 45 km/h and 55 km/h are moving towards each other on parallel tracks. If they are 400 km apart, in how many hours will they meet?
A
3 hours
B
4 hours
C
5 hours
D
6 hours
Correct Answer:
B. 4 hours
Explanation:
Relative speed = 45 + 55 = 100 km/h. Time = Distance/Speed = 400/100 = 4 hours
Q.318
Easy
By selling an item for ₹432, a shopkeeper loses 10%. At what price should he sell to gain 20%?
A
₹576
B
₹588
C
₹600
D
₹648
Explanation:
SP = ₹432 at 10% loss. CP = 432/0.9 = ₹480. For 20% profit: SP = 480 × 1.2 = ₹576.
Q.319
Easy
A trader marks goods at 60% above cost price and allows a discount of 25%. What is his profit percentage?
Explanation:
Let CP = 100. MP = 160. SP = 160 × 0.75 = 120. Profit = 20%.
Q.320
Easy
A man buys books at 5 for ₹400 and sells at 4 for ₹400. What is his profit percentage?
Explanation:
CP per book = 400/5 = ₹80. SP per book = 400/4 = ₹100. Profit = 20/80 × 100 = 25%.
