Question

Please solve this

7 : 17 :: ? : 50
Options are
1) 23
2) 26
3)124
4) 126

Thanks in advance

Answer 1

7 : 17 :: x : 50
--> 7/17 = x/50 (ratio form)

Now by cross multiplication,
17x = 7 x 50
--> 17x = 350
--> x = 350/17
--> x = 20.6 (approx.)

Why is the answer coming wrong?!

Answer 2

Answer:

The value of x is 21 (approximately).

Solution:

The given ratio is,

$7 : 17 ::  ? : 50$

Let the undefined value be x and convert the ratio into fraction to find out the value of x.  

$\frac {7}{17}=  \frac {x}{50}$

∴ The value of x is,

$\begin{array} { c } { x = \frac { 7 \times 50 } { 17 } } \\\\ { x = \frac { 350 } { 17 } } \\\\ { x = 20.58 \approx 21 ( \text {approx.} ) } \end{array}$

Here, we can take the approximate value of x as the decimal value accounts more than 5.

Hence, the value of x is 21 approximately.