[quote=akash05;509536]an aeroplane travels at speed of 13 mph in direction of air. And in opposite direction at speed of 8 mph. What is the answer???[/quote]
2.5
as
13-2.5=8+2.5

[QUOTE=Zia-ur-Rehman;509539]2 and 27 both r prime nos then wat i sthe rite ans.
i think an is 2 as it s only even no. although i tick 27 :(
:blush:[/QUOTE]

[B][I][COLOR="DarkRed"]Dear you did not understand.
27 is answer because it is not a prime number.
While other all are prime numbers.
Now understood?[/COLOR][/I][/B]

[QUOTE=Tassawur;509542][B][I][COLOR="DarkRed"]President Supreme Court Bar Mian Israr ul Haq[/COLOR][/I][/B][/QUOTE]

yes i got it right

math and gk portion
 

kindly, describe all math and general knowldge portion along with correct answers. plz give method to solve math problems also.

thnx

[QUOTE=akash05;509536]An aeroplane travels at speed of 13 mph in direction of air. and in opposite direction at speed of 8 mph. what is the answer???[/QUOTE]

it's 2.5

[QUOTE=Arsl;509535]if goverenment buy Bond then interest rate will?

increase or decrease[/QUOTE]

decrease

how u calculate 2.5 kindly explain

speed
 

[QUOTE=Arsl;509549]2.5
as
13-2.5=8+2.5[/QUOTE]

Yes that is the correct answer. I set it up as:

Speed of plane + air speed = 13
Speed of plane - air speed = 8

Solve simultaneously and you will get speed of plane = 10.5 and air speed = 2.5

[URL]http://accuplacer-test.com/accuplace...-answers-2.htm[/URL]

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13 is speed with air
8 is speed against air

Air Planes speed is average of both speeds (10.5)

When going with air it reaches 13 and when going against air it travels at 8 because air speed is 2.5 plus and minus.