UGC NET Paper 1 - 14th June 2023 (Shift 1)

# Q1 of 50

The following table shows the number of males (M) and females (F) (in thousands) in Towns X and Y during the five years from 2018 to 2022. Based on the data in the table, answer the questions 1-5

Year wise numbers of Males and Females in two Towns (in thousands)

Table X Table Y
Year Number of Males Number of Females
Number of Males
Number of Females
2018 50 49 53 53
2019 52 49 54 52
2020 55 52 55 54
2021 53 53 58 56
2022 55 52 62 55

What is the ratio of the average number of males in Town X to the average number of males in Town Y for the given period?

Options
A.

269:282

B.

265:281

C.

265:283

D.

265:282

Show Answer
Correct Answer

265:282

Solution

The correct answer is 265:282.

To find the ratio of the average number of males in Town X to the average number of males in Town Y, we first need to sum up the male populations for each town across all five years (2018–2022), and then form the ratio of these totals (since dividing both by 5 cancels out, the ratio of averages equals the ratio of totals).

Step 1: Identify the number of males in Town X for each year

From the table, the number of males in Town X (in thousands) is:

2018 → 50
2019 → 52
2020 → 55
2021 → 53
2022 → 55

Step 2: Find the total (and average) number of males in Town X

Total (Town X) = 50+52+55+53+55 = 265

Average (Town X) = 265 5 = 53

Step 3: Identify the number of males in Town Y for each year

From the table, the number of males in Town Y (in thousands) is:

2018 → 53
2019 → 54
2020 → 55
2021 → 58
2022 → 62

Step 4: Find the total (and average) number of males in Town Y

Total (Town Y) = 53+54+55+58+62 = 282

Average (Town Y) = 282 5 = 56.4

Step 5: Form the ratio of the two averages

Since both averages are divided by the same number (5), the ratio of the averages equals the ratio of the totals:

Ratio = 265/5 282/5 = 265 282

Step 6: Check if the ratio can be simplified

We check the GCD of 265 and 282.
265 = 5 × 53
282 = 2 × 3 × 47
Since 265 and 282 share no common factors, the ratio is already in its simplest form.

Therefore, the ratio of the average number of males in Town X to the average number of males in Town Y is 265 : 282.

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