Govt Exam — Quantitative Aptitude
SSC · UPSC · Bank PO · Railway · NDA — Government Exam MCQ Practice
Showing 171–180 of 429 questions
Q.171
Easy
Numbers
A shopkeeper bought goods for Rs. 5000 and sold at a profit of 20%. What is the selling price?
Correct Answer:
B. Rs. 6000
Explanation:
SP = 5000 + 20% of 5000 = 5000 + 1000 = 6000.
Q.172
Easy
Numbers
A number is increased by 25% and then decreased by 20%. What is the net percentage change?
Correct Answer:
A. 0%
Explanation:
Let number = 100. After 25% increase: 125. After 20% decrease on 125: 125 × 0.8 = 100. Net change = 0%
Q.173
Easy
Numbers
If the ratio of boys to girls in a class is 3:2 and there are 45 boys, how many girls are there?
Correct Answer:
B. 30
Explanation:
Boys:Girls = 3:2. If boys = 45, then 3x = 45, x = 15. Girls = 2x = 30
Q.174
Easy
Numbers
A shopkeeper buys an item for Rs. 400 and sells it at a profit of 35%. What is the selling price?
Correct Answer:
C. Rs. 540
Explanation:
SP = CP + Profit = 400 + (35% of 400) = 400 + 140 = Rs. 540
Q.175
Easy
Numbers
Two numbers are in the ratio 5:8. If their sum is 130, find the larger number.
Correct Answer:
B. 80
Explanation:
Let numbers be 5x and 8x. 5x + 8x = 130, 13x = 130, x = 10. Larger number = 8 × 10 = 80
Q.176
Easy
Numbers
A sum of Rs. 1200 becomes Rs. 1440 in 2 years at simple interest. What is the rate of interest?
Correct Answer:
B. 10%
Explanation:
SI = 1440 - 1200 = 240. Rate = (SI × 100)/(P × T) = (240 × 100)/(1200 × 2) = 10%
Q.177
Easy
Numbers
A train travels 450 km in 5 hours. What is its average speed?
Correct Answer:
C. 90 km/h
Explanation:
Speed = Distance/Time = 450/5 = 90 km/h
Q.178
Easy
Numbers
A and B together earn Rs. 8000 in a month. A earns 60% of this. How much does B earn?
Correct Answer:
A. Rs. 3200
Explanation:
B earns 40% of 8000 = 0.4 × 8000 = Rs. 3200
Q.179
Easy
Numbers
If 15% of a number is 45, what is the number?
Correct Answer:
B. 300
Explanation:
Let number = x. 0.15x = 45. x = 45/0.15 = 300
Q.180
Easy
Numbers
A company's profit increases from Rs. 50000 to Rs. 65000. What is the percentage increase?
Correct Answer:
B. 30%
Explanation:
Increase = 65000 - 50000 = 15000. Percentage = (15000/50000) × 100 = 30%