Explanation

This is a classic inverse proportion problem:
More men → Less time required.

Given:

• 10 men take 40 days

• 20 men will take ? days

Since the number of men and the number of days are inversely proportional:

$$text{Men}_1 times text{Days}_1 = text{Men}_2 times text{Days}_2$$$$10 times 40 = 20 times x$$ $$400 = 20x Rightarrow x = frac{400}{20} = 20$$

Explanation

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

Fidelity (وفاداری، دیانتداری)
 Treason (غداری)

The antonym of "fidelity" (faithfulness to a commitment)

Treason (betrayal of one's country or allegiance).

Explanation

  Passive voice is used here.

The correct past participle form is "spoken."

Explanation

Without an atmosphere to scatter sunlight, there would be no diffusion of light.

Hence, the sky would appear black, just like it does from space.

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.