Explanation

The ratio of copper to silver is 3:7.

To find the percentage of silver in the alloy, we can use the following formula:

Percentage of silver = (Amount of silver / Total amount) × 100

First, let's find the total amount:

Total amount = Copper + Silver

= 3 + 7

= 10

Now, we can plug in the values:

Percentage of silver = (7 / 10) × 100 = 70%

So, the percentage quantity of silver in the alloy is 70%.

The correct answer is: 70%

Explanation

The 2025 Australian federal election was held on Saturday, 3 May 2025.

All 150 seats in the House of Representatives and 40 of 76 seats in the Senate were up for election.

The Albanese Labor government won a second term with a landslide victory.

The opposition Liberal–National Coalition, led by Peter Dutton, was defeated.

Explanation

Given data:

The seller sells 40% of his apples.
After selling, he still has 420 apples.
Concept/Formula:

The concept used to solve this problem is related to "percentage". The seller was left with 60% of his apples (100% - 40% = 60%) when he had 420 apples left.

Solution:

⇒ the 420 apples represent 60% of his original stock (since he sold 40%).

⇒ If 60% of the original stock equals 420 apples, then 1% can be calculated by dividing 420 by 60.

Hence, 1% = 420 ÷ 60 = 7 apples.

⇒ Now, to find the total original stock (100%), the amount per 1% is multiplied by 100.

Therefore, the original amount = 7 × 100 = 700 apples.

Therefore, originally, he had 700 apples.

Explanation

In May 2024, Dr Helen Mary Roberts has been promoted to the rank of brigadier in the Pakistan Army Medical Corps.

Helen Mary Roberts  is the the first female brigadier to hail from the country’s Christian community.

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Explanation

SIFC: Special Investment Facilitation Council

Formation: 17th June, 2023

Founded by: Shahbaz Sharif

Headquarter: Islamabad

Purpose: Economic revival of Pakistan, attract Foreign Direct Investment

Explanation

In 27 B.C., Gaius Julius Caesar Octavianus was given the title Augustus by the Roman Senate.

This marked the official beginning of the Roman Empire.

Augustus ruled from 27 B.C. to 14 A.D.

Explanation

On July 16, 2023, China recorded a temperature of 52.2°C in Sanbao, Xinjiang Province, marking the highest temperature ever recorded in the country.

While Japan and Italy also experienced extreme heat, with temperatures nearing 40°C and 43°C respectively, China's record surpassed both.

Explanation

X-ray machines at airports scan luggage to identify weapons, explosives, and other banned items.

This helps ensure passenger safety and prevents dangerous objects from being carried onto planes.

Explanation

ASF handles the internal security of airports in Pakistan.

Their duties include passenger screening, baggage checks, and overall airport safety.

Explanation

Word Government Summit 2023

Venue: Dubai, UAE

Date: 13 February 2023

Theme 2023: Shaping Future Governments