Question

5:30::8: ? Answer is 69 .But I need explanation​

Answer 1

5²+5=30

similarly

8²+5=69

so,5:30::8:69

Answer 2

SOLUTION

TO DETERMINE

The number in ? mark

5 : 30 = 8 : ?

EVALUATION

Here the given expression is

5 : 30 = 8 : ?

We now find the pattern

5 : 30

= 5 : ( 5² + 5 )

So the pattern is n : ( n² + n )

Thus for n = 8 we have

8 : ( 8² + 8 )

= 8 : 69

FINAL ANSWER

5 : 30 = 8 : 69

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