Explanation

105 men complete the work in 45 days

Total work = 105 men * 45 days = 4725 man-days

Now, 90 men will complete the work:

4725 man-days / 90 men = 52.5 days

Explanation

  Passive voice is used here.

The correct past participle form is "spoken."

Explanation

Let's calculate the percentage of girls:

Given ratio: Boys:Girls = 5:3

Total parts = 5 + 3 = 8

Percentage of girls = (3/8) * 100

= 37.5%

Explanation

Multiply both sides by 2:

$$|3x| = 6 Rightarrow 3x = ±6 Rightarrow x = ±2$$

Explanation

 In February 1960, the President's Cabinet of Pakistan decided to name the new capital of Pakistan as "Islamabad". 

The idea for the city was conceived by President Ayub Khan

It was built to replace Karachi as the capital 

Explanation

9% of x = 63

0.09x = 63

x = 63 / 0.09

x = 700

Explanation

Goad: means to provoke or incite, often in an unpleasant way.

Restrain: means to keep under control or prevent.

Explanation

Number of applicants who appeared = 20

Total applicants = 80

Percentage = (20/80) * 100

= 0.25 * 100

= 25%

Explanation

The correct infinitive structure after "asked us" is "to wait.

Explanation

Convex lenses converge light rays and are used in reading glasses to magnify close-up text.

A short focal length provides greater magnification, making it ideal for reading.