Bissoy.com
Doctors Medicines MCQs Q&A

The total population of a town is 2800 where number of males is 720 more than that of females. If the number of males reduces by 40% and that of females increases by 20%, then find the new population of town.

The total population of a town is 2800 where number of males is 720 more than that of females. If the number of males reduces by 40% and that of females increases by 20%, then find the new population of town. Correct Answer 2304

Given:

Total population of a town = 2800

Number of males = 720 + Number of females

Calculation:

Let the number of females and males be x and (x + 720) respectively

According to the question,

x + x + 720 = 2800

⇒ 2x + 720 = 2800

⇒ 2x = 2080

⇒ x = 1040

Number of males = (1040 + 720) = 1760

Now, New number of males after 40% reduction = 1760 × 60%

⇒ 1056

New number of females after 20% increment = 1040 × 120%

⇒ 1248

New population of town = (1056 + 1248)

⇒ 2304

∴ New population of town is 2304

Related Questions

Find the total population of town A. Statement I: Number of males in town B is 11520 which is 80% of the number of females in town A. There are 4880 more males in town A as compared to town B. Statement II: The ratio of number of males and females in town A is 41 : 36 and difference of number of males and females is 2000. 
The total number of males and females in a town is 70,000. If the number of males is increased by 6% and that of the females is increased by 4%, then the total numbers of males and females in the town would become 73520. What is the difference between the number of males and females in the town, in the beginning?
The following table shows the percentage distribution of the population of five states, A, B, C, D and E on the basis of the poverty line and also on the basis of sex. State Percentage of population below the poverty line Proportion of Males and Females Below poverty line Above poverty line Males: Females Males : Females A 15 5: 3 4: 3 B 25 1: 2 2: 3 C 19 3: 2 4: 5 D 35 1: 2 2: 3 E 24 3: 5 6: 7   If the population of males below the poverty line State C is 3 million, then what is the total population of State C?
Each question below is followed by two statements I and II. You have to determine whether the data given in the statements are sufficient for answering the question. You should use the data and your knowledge of Mathematics to choose the best possible answer. How many males are there in society A? I. Number of females in society B is 56 more than the number of males in society C. Society C has a total population(male and female combined) of 180. II. Society C has 20% more males than society A who makes 60% of the total population of society A and females in society A is equal to males in society B. 
Ms. Rahena needs to get from Town C. The only was to get Town C is taka a bus from Town A to Town B and then take a train from Town B to C. The bus leaves Town A at 8.00 am and reaches Town b after 212 hours. The first train leaves Town B at 9.00 am and then there is a train every 50 minutes. The train reaches Town C 40 minutes after its departure . If Ms. Rehana leaves Town A at 8.00 am, When is the earliest she would arrive at Town C?
In a society A the ratio of males and females is 8 ∶ 5 and in another society B the ratio of males and females is 7 ∶ 9. If the sum of the males in both the society is 52 and the number of females in  society B is 21 more than the number of female in society A. Find the number of men in both societies is what percentage of number of females in both the societies(approximate value).
There are 56 passengers travelling in a bus out of which 26 are males and the rest are females. At the next stop, 12 males and 8 females get down and 7 males and 6 females enter the bus. What is the ratio of males and females in the bus now?
Consider the given statement/s to be true and decide which of the given conclusions/assumptions can definitely be drawn from the given statement. Statement I. All males are humans. II. Some humans are females. Conclusion I. All males are females. II. Some females are males. III. Some females are humans. IV. All humans are males.
If the number of females is 16.66% of the number of males. 90% females and 30% of males are educated. If the number of uneducated males is 12,300 more than that of uneducated females what is the total population?
In a constituency, 55% of the total number of voters are males and the rest are females. If 40% of the males are illiterate and 40% of the females are literate, then by what percentage is the number of illiterate females more than that of the illiterate males (correct to one decimal place)?