Explanation

To calculate speed in km/h:

1. Convert the time to hours:
   $20\text{ minutes}=\frac{20}{60}\text{ hours}=\frac{1}{3}\text{ hours}$

2. Use the formula for speed:
   $text{Speed} = frac{text{Distance}}{text{Time}} = frac{16}{frac{1}{3}} = 16 times 3 = 48 , text{km/h}$
   

So, the speed of the train is 48 km/h.

Explanation

7*70 = 490 kg - total weight of 7 people

80 - 60 = 20 kg less

(490 -20)/7 ≈ 67.14 kg - new average weight ANSWER

Explanation

Let the first number be = 6xSecond number = 3xand the third number = 2xAccording to the question 6x + 3x + 2x = 154 × 3or 11x = 154 × 3Required difference = 6x – 2x = 4x = 4 × 42 = 168

Explanation

Multiplying 0.04 × 0.0162 × 0.001 gives 0.000000648.

Explanation

The sum of all odd numbers between 1 and 100 is 50^2=2500

The sum of all even numbers between 2 and 100 is 50^2+50=2550

The total of 1 to 100 natural numbers is 2500+2550

5050

The average of the first 100 numbers is 5050 / 100 = 50.50

Explanation

In January 2023, The federal government notified Akhtar Zaman  as Punjab Chief Secretary for three months.

Previously, Abdullah Khan Sumbal was serving as Chief Secretary Punjab. 

Explanation

(0.7) ^? + 3 = (0.49 x 0.343/0.2401)^4

(0.7)^? + 3 = (0.7)^4

On comparing the exponents both sides, we get

? + 3 = 4

∴ ? = 4 - 3 = 1

Explanation

Zakat is typically 2.5% of the total wealth.

To find the total amount, divide the Zakat paid by 0.025 (8500 ÷ 0.025 = 340,000).

Explanation

Prime Minister Imran Khan on February 26, 2021 laid the foundation stone of the ambitious Central Business District (CBD) project at the Walton Airport site.

This asserting that the project would help create much-needed wealth to pay off foreign loans that had accumulated over the past ‘decade of darkness’.

Explanation

To find the answer, divide 4.036 by 0.04:

4.036 ÷ 0.04 = 100.9