Explanation

5 × 2 = 10

10 × 2 = 20

20 × 2 = 40

40 × 2 = 80

Explanation

German Silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc

Explanation

Let the price of the chair be =x

Let the price of table =400+x

6 of each sold at 4800

⟹6×(400+x)+6×x=4800

⟹x=200 

chair price =200 , table price =600

required percentage =600200​×100

 

                                    =3331​%

 

Explanation

Karachi was first called Kolachi

Karachi is the financial hub of Pakistan

Karachi is the most populous city in Pakistan

the 12th most populous city in the world, with a population of over 20 million

It is situated at the southern tip of the country

It is the former capital of Pakistan and the capital of the province of Sindh

There are seven districts of Karachi, namely:

1. Karachi Central District

2. Karachi East District

3. Karachi South District

4. Karachi West District

5. Korangi District

6. Malir District

7. Keamari District

***

The largest district by area is Malir

**

ND12-2-2023

Explanation

Part of work completed by Hamza in a day = 1/15 Part of work completed by Aslam in a day = 1/12 Part of work completed by them in a day = (1/15)+(1/12) = 3/20 Part of work completed by them in 4 days = (3/20)*4 = 3/5 Fraction of work left

= 1-(3/5)
= 2/5

Explanation

Basic rate per hour = Re. (20/40) = Re. 1/2.

Overtime per hour = 125 % of Re. 1/2 = Re.5/8.

He worked x hours overtime.

Then 20 + 5/8 x = 25 (or) = 5/8 x = 5

X = 40/5 = 8 hours

=> he worked in all for (40 + 8) = 48 hours.

 

Explanation

Sir Isaac Pitman belonged to the UK, he was a teacher of the English language who developed the most widely used system of shorthand, known now as Pitman shorthand.

 

 

 

 

Explanation

5%of(25%of1600)=5%of( 100 25 ∗1600)

=5% of 400=20