TCS
Company
Numerical Ability
Algebra
3X/5Y = 5Y/3X. Find the value of X/Y
a)3/5 b)5/3 c)2/5 d)5/2
Read Solution (Total 3)
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- 5/3
3x*3x=5y*5y or (3x)^2=(5y)^2 or 3x=5y
x/y=5/3 - 13 years agoHelpfull: Yes(7) No(1)
- x/y=5/3
cross Multiply and sqare ropt - 13 years agoHelpfull: Yes(2) No(0)
- cross multiple X and Y
so 3x*3x=5y*5y
9x^2=25y^2
x^2/y^2=25/9
x/y=5/3
Hence ans is b)5/3 - 10 years agoHelpfull: Yes(0) No(0)
TCS Other Question
A group of friends Tom, Teena, Dick, Tiana and Harry and Harriot, go out to a fair 300 meters from the Mc Donalds which is 5 Km away. They see a weighing machine and decide to have some fun. However, the girl refused to step on the weighing machine. So Tom, Dick and Harry way themselves in a particular order. First Tom, Dick and Harry wheigh themselves individually and then Tom and Dick, Dick and Harry, Tom and Harry and then Tom, Dick and Harry together respectively. The recorded weight for the last measure is 197 Kgs. The average of all the 7 measures is.
1. 253.29
2. 112.57
3. 140.71
4. 65.67
The age of the two friends were in the ration of 6:5.If the sum of their ages is 55.Then after how many years their ratio will become 8:7?