Explanation

By using Flip rule:

So,

A’s 1 day work = 1/10

B’s 1 day work = 1/15

(A+B)’s 1 day work =

(1/10+1/15)= (3 + 2)/30 = 5/30= 1/6 

So together they can complete work in 6 days

Explanation

Mean weight of 6 boys =48 kg.

Let the weight of the 6th boy be a kg.

650+45+50+42+40+a​=48

=>227+a=288=>a=61

weight of the 6th boy =61 kg.

Explanation

Side of a square is increased by 25 % 

Let the  initial side be x

Initial area =x2

New Side =x+4x​=45x​

New area =1625x2​

increase in area =169x2​

∴ % increase =16900​=56.25 %

Explanation

 PLO founded in May 28, 1964, Jerusalem

PLO stand for Palestine Liberation Organization

Explanation

Ḥamās founder and spiritual leader, Sheikh Ahmed Yassin

Explanation

The Nobel Peace Prize 1993 was awarded jointly to Nelson Mandela and Frederik Willem de Klerk "for their work for the peaceful termination of the apartheid regime, and for laying the foundations for a new democratic South Africa."

Explanation

Air Sofia was an airline based in Sofia, Bulgaria. 

It operated charter flights to destinations in Europe, Africa, the Far East, South America and the Middle East.

Explanation

On 11 August 1955, Muhammad Ali was appointed as the Prime Minister of Pakistan by then-Governor-General Iskandar Mirza, upon the dismissal of the Bogra's Talent administration.

Explanation

The first session of the first Constituent Assembly of Pakistan was held on 10th August 1947 at Sindh Assembly Building Karachi.

On 11th August 1947 Quaid-i-Azam Muhammad Ali Jinnah was elected as the President of the Constituent Assembly of Pakistan.

Liaquat Ali Khan headed after the death of Jinnah for three years and produced the Objectives Resolution.

Explanation