Try the new Google Books
Check out the new look and enjoy easier access to your favorite features
Try the new Google Books
Check out the new look and enjoy easier access to your favorite features
Try the new Google Books
Check out the new look and enjoy easier access to your favorite features
Try the new Google Books
Check out the new look and enjoy easier access to your favorite features
TCS Company Numerical Ability Ratio and Proportion
- Ans : 100
Explanation: lets us take two number be x,y
then, x/y=3/4 x=3y/4 ---(1)
since the difference between their squares is 28,
y^2-x^2=28 ---(2)
substitute (1) in (2)
y^2-(3y/4)^2=28
y^2-(9y^2/16)=28
(16y^2-9y^2)/16=28
7y^2=28*16=448
y^2=448/7=64
y=8
substitute y in (2)
y^2-x^2=28
(8)^2-x^2=28
64-x^2=28
x^2=64-28
x^2=36
x=6
therefore sum of square of the two numbers 6^2+8^2=36+64=100.
- 8 years agoHelpfull: Yes(23) No(2)
- x/y=3/4
y2-x2=28
sub x=3y/4
y=8
x=6
x2+y2=100
- 8 years agoHelpfull: Yes(8) No(1)
- let 2 numbers be 3x,4x diff of the squares of numbers are 16x^2-9x^2=28 x^2=4 sum of the square of yhe numbers are 16(4)+9(4)=100
- 8 years agoHelpfull: Yes(4) No(0)
- 3x: 4x.. now take x as 2...
now both numbers are 6 and 8. differnce between squares of two numbers is 8^2 - 6^2 = 64 - 36 = 28..
So, the sum of these two numbers is 14..
- 8 years agoHelpfull: Yes(2) No(3)
- given x/y=3/4 so x=3/4y,
now y^2-x^2=28 y^2-(3/4y)^2=28
y=8,
so x=8*3/4=6
- 8 years agoHelpfull: Yes(1) No(1)
- let no. are 3x and 4x now (3x)^2 -(4x)^2=28
i.e. x=2
hence there sum of squre is 100
- 8 years agoHelpfull: Yes(1) No(0)
- let the number be x then ratio will be 3x and 4x. diff of their square 3x^2 -4x^2 =28 7x^2 =28 x=2 then nuber is 3*2=6 and 4*2=8 sum of thier square is 36+64 = 100 ans
- 8 years agoHelpfull: Yes(1) No(0)
- 100:
let no be 3x nd 4x
16x^2-9x^2=28
x^2=4
25x^2=100
- 8 years agoHelpfull: Yes(1) No(0)
- answer is 100
3y=4x
so 16x^2-9y^2=0
and y^2-x^2=28
solving dese eq x=6
and y=8
so x^2+y^2=100
- 8 years agoHelpfull: Yes(1) No(0)
- options are given like this
a) 4,096
b) 390
c) 420
d) none
- 8 years agoHelpfull: Yes(0) No(1)
- two nos= 3x and 4x
14x-9x=7x=28
x=4, nos will be = 12 and 16
sum of nos.= 144+256=400
- 8 years agoHelpfull: Yes(0) No(4)
- ans: 400
ratio=3:4
so the numbers are 12,16
sum of squares of nums is:144+256=400
- 8 years agoHelpfull: Yes(0) No(4)
- pls send me tcs apti papers 2013.......my
- 8 years agoHelpfull: Yes(0) No(0)
- x/y=3/4,x2-y2=28,x2+y2=100
- 8 years agoHelpfull: Yes(0) No(0)
- 400 None of the options are 400 so answer is d. None f these
- 8 years agoHelpfull: Yes(0) No(0)