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.

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