UPSC
Government Jobs Exams
Numerical Ability
Arithmetic
3x =8y and 5y=9z then x/z=?
Read Solution (Total 8)
-
- x/y=8/3
z/y=5/9
x/z=8/3*9/5=24/5 - 9 years agoHelpfull: Yes(1) No(0)
- 3X/5Y=8Y/9Z
3X/9Z=8Y/5Y
X/3Z=8/5
X/Z=24/5 IS THE CORRECT ANSWER:: - 1 year agoHelpfull: Yes(1) No(0)
- 3x = 8y, ....... (i)
5y = 9z
(5*8/5)y=(9*8/5)z
8y=(72/5)z. ....... (ii)
From (i) and (ii)
3x=(72/5)z
X = (24/5)z
(X/z) = (24/5)
- 9 years agoHelpfull: Yes(0) No(0)
- 3X=8Y; then X=8Y/3
5Y=9Z; then Z=5Y/9
X/Z = 8Y/3*9/5Y
Hence X/Z = 24/5 or 4. 8 - 9 years agoHelpfull: Yes(0) No(0)
- answer is 24/5
Proof:
3x=8y
5y=9z ---> y=9z/5
therefore,
3x=8*(9z/5)
x=24z/5
i.e. x/z=24/5 - 8 years agoHelpfull: Yes(0) No(0)
- y=9/5z
3x=8(9/5z)
3x=14.4z
x/z=3/14.4 - 8 years agoHelpfull: Yes(0) No(0)
- ans : 72/15
- 8 years agoHelpfull: Yes(0) No(1)
- x/y= 8/3 and y/z = 9/5
For,
. x/z = x/y *y/z
. =8/3*9/5
. x/z = 72/15= 24/15 - 8 years agoHelpfull: Yes(0) No(0)
UPSC Other Question