271. A garrison has sufficient food for 500 people to survive for 6 days. At the end of 2 days 100 men desert. How long the provisions are sufficient for now?
A. 5
B. 6
C. 4
D. 10
✅ The correct answer is option A. 5.
Mathematics
Practice the latest Mathematics MCQs with answers and explanations to excel in exams, interviews, and job tests. Our collection covers algebra, calculus, geometry, trigonometry, statistics, probability, arithmetic, matrices, and differential equations. These Mathematics multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, university entry tests, and recruitment assessments. Strengthen your problem-solving skills, improve accuracy, and boost your exam performance with our updated Mathematics MCQs.
272. Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg.
A. 1 : 3
B. 2 : 3
C. 3 : 4
D. 4 : 5
✅ The correct answer is option B. 2 : 3.
273. If the simple interest on a certain sum of money after 3 1⁄8 years is 1⁄4 of the principal, what is the rate of interest per annum?
A. 6%
B. 4%
C. 8%
D. 12%
✅ The correct answer is option C. 8%.
274. Two numbers are in the ratio 3 : 5. If 9 is subtracted from each, the new numbers are in the ratio 12 : 23. The smaller number is :________?
A. 27
B. 33
C. 49
D. 55
✅ The correct answer is option C. 49.
275. The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is_________?
A. 6 kmph
B. 7 kmph
C. 8.5 kmph
D. 8 kmph
✅ The correct answer is option A. 6 kmph.
276. A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.
A. 18 days
B. 22 ½ days
C. 24 days
D. 26 days
✅ The correct answer is option B. 22 ½ days.
If A completes a work in 1 day, B completes the same work in 3 days
If A completes a work in 1 day, B completes the same work in 3 days
277. The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?
A. 36 years
B. 24 years
C. 30 years
D. 18 years
✅ The correct answer is option C. 30 years.
20 + 24 + 8 * 2 = 60/2 = 30
20 + 24 + 8 * 2 = 60/2 = 30
278. Walking at 80% of his usual speed, a man is 10 mins late to his office. Find the usual time taken by hime to reach his office.
A. 20 minutes
B. 30 minutes
C. 40 minutes
D. 50 minutes
✅ The correct answer is option C. 40 minutes.
Let his
Let his
usual speed be x kmph
usual travel time be t hours
distance to office be d km d=xt d=(0.8x)*[t+(10/60)] xt=0.8xt+(2x/15) Solving,
t=40 minutes
279. A man buys a watch for Rs. 1950 in cash and sells it for Rs. 2200 at a credit of 1 year. If the rate of interest is 10% per annum, the man:
A. gains Rs. 55
B. gains Rs. 50
C. loses Rs. 30
D. gains Rs. 30
✅ The correct answer is option B. gains Rs. 50.
280. A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
A. 8.2
B. 4.2
C. 6.1
D. 7.2
✅ The correct answer is option D. 7.2.