Explanation

4 workers take 9 hours

=> Total work = 4 × 9 = 36 worker-hours

6 workers => time = Total work / workers

= 36 / 6

= 6 hours

Last verified on 10-02-2026

Explanation

Let Zahra’s age = x, Ayesha’s age = y. Then 𝑥 × 𝑦 = 195

x×y=195. Factor pairs of 195: (1,195), (3,65), (5,39), (13,15).

Since Zahra is younger, Zahra = 13, Ayesha = 15.

Explanation

A person walks:

- 3 km North

- 4 km East

- 3 km West

Net East-West movement = 4 km East - 3 km West = 1 km East  

North movement = 3 km

Distance from the starting point = √(3² + 1²) = √(9 + 1) = √10 ≈ 3.16 km

So, the person is approximately 3.16 km away from the starting point.

Explanation

Explanation

B covers 28 meters in 7sec. So, B’s time over the course = (7/28)*1000 =250 sec.

Whereas A’s time over the course = 250 -7 = 243 sec.

i.e A’s time over the course is 4min, 3 sec

Explanation

Let's denote Huma's age as x and Ali's age as y.

The given situation translates to:

2x + 3y = 54

This equation directly matches one of the options.

The answer is 2x + 3y = 54.

Explanation

A and B together can complete the work in 3 days, so their combined rate of work is 1/3 per day.

They work together for 2 days, so they complete 2/3 of the work.

B leaves, and A completes the remaining 1/3 of the work in 2 days. This means A's rate of work is 1/6 per day (since A completes 1/3 of the work in 2 days).

Now, we know B's rate of work is the difference between their combined rate and A's rate: (1/3 - 1/6) = 1/6 per day.

Since B can complete the entire work in x days, B's rate of work is also 1/x per day.

Equating the two expressions for B's rate of work, we get: 1/6 = 1/x --> x = 6

So, B alone can complete the work in 6 days.

Explanation

To solve the equation:

8/3 × 5/14

Multiply the numerators and denominators:

(8 × 5) / (3 × 14) = 40 / 42

Simplify the fraction:

40 / 42 = 20 / 21

Explanation

Let Dawood's age = x

Shakeel's age = x + 12

Five years ago:

Dawood's age = x - 5

Shakeel's age = x + 12 - 5 = x + 7

(x - 5) + (x + 7) = 28

2x + 2 = 28

2x = 26

x = 13

Shakeel's age = x + 12 = 13 + 12 = 25

Explanation

Given:

- 6 men make 10 sofas in 2 days.

First, find the total man-days needed for 10 sofas:

6 men × 2 days = 12 man-days for 10 sofas.

So, man-days per sofa = 12 ÷ 10 = 1.2 man-days per sofa.

Now, for 8 sofas:

Total man-days needed = 8 sofas × 1.2 = 9.6 man-days.

If 8 men are working, number of days needed = 9.6 ÷ 8 = 1.2 days