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

Starts facing North

First left turn → faces West

Second left turn → faces South

Explanation

Let  x= the length of two of the sides (the ones that are equal)

x + 5 = the length of the third side

x+ x+ x + 5 = 50 add all three sides

3x + 5 + 50  

3x = 50 -  4

3x = 45

subtract 5 from both sides x = 15 divide by 3

The length of the third side= x + 5 = 20

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.