Let the price of the mixed variety be Rs. x per kg. By the rule of alligation, we have :

Cost of 1 kg of type 1 rice           Cost of 1 kg of type 2 rice  

∴(20-x)/(x-15) = 2/3 

⇒ 60 - 3x = 2x - 30

 ⇒ x = 18.

Suppose the can initially contains 7x and 5x litres of mixtures A and B respectively

Quantity of A in mixture left =7x-712×9=7x-214 litres.

Quantity of B in mixture left =  5x-512×9=5x-154litres.

7x-2145x-154+9=79

⇒28x-2120x+21=79

⇒x=3

 So, the can contained 21 litres of A.

Required Length = H.C.F of 700 cm, 385 cm and 1295 c

                             = 35 cm.

G-15 is an economic grouping of Third World Nations.

The countries listed in G-15 group are Algeria, Argentina, Brazil, Chile, Egypt, India, Indonesia, Iran, Jamaica, Kenya, Malaysia, Mexico, Nigeria, Peru, Senegal, Sri Lanka, Venezuela, and Zimbabwe.

The G-15 membership has expanded to 18 countries, but the name has remained unchanged. 

• The First World described countries whose views aligned with NATO and capitalism. The United States was considered a member of the First World.

• The Second World referred to countries that supported communism and the Soviet Union. Russia was considered a member of the Second World.

• The Third World referred to countries whose views did not align with NATO and capitalism or the Soviet Union and communism. A Third World country is a developing nation characterized by poverty and a low standard of living for much of its population. Third World countries referenced the nations, mostly in Asia and Africa.

Speed =   6005×60 m/sec= 2 m/sec = 2 x (18/5) km/hr = 7.2 km/hr

Speed = 9 km/hr = 9 x (5/18) m/sec = 5/2 m/sec   

Distance = (35 x 4) m = 140 m.

Time taken = 140 x (2/5) sec= 56 sec

speed    = (5x5/18)m/sec
             = 25/18 m/sec.

Distance covered in 15 minutes    = (25/18 x 15 x 60)m
                                                 = 1250 m.

Suppose they meet x hrs after 8 a.m

then,

[Distance moved by first in x hrs] + [Distance moved by second in (x-1) hrs] = 330.

Therefore, 60x + 75(x-1) = 330.

 => x=3.

So,they meet at (8+3) i.e, 11a.m.