Explanation

Let's say B's income is 100%.

Then, A's income is 60% (since it's 40% less than B's).

To find out how much percent B's income is more than A's income, we need to find the difference between their incomes and divide it by A's income, then multiply by 100:

((B's income - A's income) / A's income) * 100

= ((100 - 60) / 60) * 100

= (40 / 60) * 100

= 66.66%

So, B's income is 66.66% more than A's income.

Last verified on 04-02-2026

Explanation

B's 1 day work = 1/20

C's 1 day work = 1/30

(B+C)'s 1 day work = 1/20 + 1/30 = 1/12

(B+C)'s 2 days work = 2 × 1/12 = 1/6

Remaining work = 1 - 1/6 = 5/6

A's 1 day work = 1/18

Time taken by A to complete 5/6 work:

= (5/6) / (1/18)

= 5/6 × 18

= 15 days

Last verified on 04-02-2026

Explanation

• In Pakistan, constitutional amendments require a two-thirds majority in both National Assembly and Senate.
• Governed by Articles 238 and 239 of the 1973 Constitution.
• Ensures broad consensus before changing fundamental laws.

Last verified on 04-02-2026

Explanation

• Leaders of Hyderabad were historically called Nazims.

Additional information:

• They administered the state under the Nizam monarchy.
• The Nizams were rulers from 18th to 20th century.
• Hyderabad State included regions now in Telangana, Karnataka, and Maharashtra.
• Nazims were responsible for local governance and law enforcement.

Last verified on 04-02-2026

Explanation

• BIOS stands for Basic Input Output System.

Additional information:

• BIOS is a firmware stored on a computer’s motherboard.
• Initializes hardware during booting and provides runtime services.
• Acts as an interface between operating system and hardware.

Last verified on 04-02-2026

Explanation

• “The best” is used for superlative adjectives to show the highest quality.
• Correct usage: He wrote the best book means his book is better than all others.
• Superlatives are usually formed with -est or most.

Last verified on 04-02-2026

Explanation

• Sound waves are mechanical waves and need a medium to travel.
  • They travel fastest in solids, slower in liquids, and slowest in gases.
  • Solid particles are closely packed, allowing rapid vibration transfer.

Last verified on 04-02-2026

Explanation

• Citrus plants belong to the Rutaceae family.
• Includes oranges, lemons, limes, and grapefruits.
• Members are mostly evergreen trees and shrubs.
• Characterized by aromatic leaves and gland-dotted rinds.
• Widely cultivated for fruits and essential oils.

Last verified on 04-02-2026

Explanation

• Hydrogen bonding occurs when hydrogen is covalently bonded to highly electronegative atoms like O, N, or F.
• Present in water (H₂O), ammonia (NH₃), and hydrogen fluoride (HF).
• Responsible for high boiling points, surface tension, and solubility.

Last verified on 04-02-2026

Explanation

• Lichens are a combination of fungus and algae or cyanobacteria.
• Both organisms benefit from each other, forming a symbiotic relationship.
• Fungus provides structure and protection; algae/cyanobacteria perform photosynthesis.

Last verified on 04-02-2026