Question : X is 30% more than Y and 25% less than Z. If the value of Y is Rs. 300, then what is the value (in Rs.) of Z?
Option 1: 390
Option 2: 400
Option 3: 470
Option 4: 520
Correct Answer: 520
Solution : Value of Y = 300 So, X = $300 × \frac{130}{100}$ = $390$ Now, X = Z × $\frac{75}{100}$ ⇒ 390 = Z × $\frac{75}{100}$ ⇒ Z = $\frac{100}{75}\times 390$ ⇒ Z = 520 Hence, the correct answer is 520.
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Question : If $x+y+z=19, x y z=216$ and $x y+y z+z x=114$, then the value of $\sqrt{x^3+y^3+z^3+x y z}$ is:
Option 1: 32
Option 2: 30
Option 3: 28
Option 4: 35
Question : If $x+y+z=10$, $x y+y z+z x=25$ and $x y z=100$, then what is the value of $(x^3+y^3+z^3)$?
Option 1: 450
Option 2: 540
Option 3: 550
Option 4: 570
Question : If $x+y+z=17, x y z=171$ and $x y+y z+z x=111$, then the value of $\sqrt[3]{\left(x^3+y^3+z^3+x y z\right)}$ is:
Option 1: –64
Option 2: 4
Option 3: 0
Option 4: –4
Question : If $x+y+z=19, x y z=216$ and $x y+y z+z x=114$, then the value of $x^3+y^3+z^3+x y z$ is:
Option 1: 1225
Option 2: 1441
Option 3: 361
Option 4: 577
Question : If $x+y+z=13,x^2+y^2+z^2=133$ and $x^3+y^3+z^3=847$, then the value of $\sqrt[3]{x y z}$ is:
Option 1: $8$
Option 2: $7$
Option 3: $-9$
Option 4: $-6$
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile