T.Chandrasekar

• Jul 13th, 2005

 

I think the answer may be wrong! 
The corret one is 1.5 ft.

murali922

 Profile Answers by murali922 

• Nov 19th, 2005

 

Answer should be 1.5 !!!

Let the trees be x,y

from question : -

eq1 is   x = 3/5 (y)

eq2 after 4 yrs,

x+y = 8

from the 2 equations we get y = 5 and x = 3

according to our equation x= 3/5(y) -> x is the smaller tree.

In 4 yrs x grows 3ft

In 2 yrs x grows ?ft

Ans = 1.5ft.

Correct me if I am wrong.

M.A.Srinivas

• Dec 25th, 2005

 

I too got the answer everybody is getting i.e., 1.5 ft. But I need the correct proof, which proves the answer as <2 ft. Where can I get cprrect proof?

abhishek

• Mar 12th, 2006

 

         hi ans is 1.5 by unitary method

in 4 years (t1=3/5)*t2

this shows that t2 is big tree

now during 4 years t1+t2= 8

then                    t1+(5/3)*t1=8

                           t1=3  t2=5

now in 4yr t1(small tree) grows 3 ft

      therefore in 2 yr t1(small tree )will grow (3/4)*2=1.5

vignes2005

 Profile Answers by vignes2005 

• Jan 31st, 2007

 

total height in 4 years=8 ftwe take it as x+ (3/5)x=8==>x(8/5)=8==>x=5tallest tree in 4y is 5ftsmallest tree is 3fthence in 2y which is 1.5 ft

jeet4u

 Profile Answers by jeet4u 

• Jan 8th, 2010

 

x + 3/5x= 8    (4yrs)
x=5     (larger tree)
thus, smaller tree=3/5*5=3feet(in 4yrs)
thus, in 2yrs, smaller tree =3/2=1.5 feet