100 is related to 18 following a certain logic. Following the same logic, 90 is related to 16. Which of the following is related to 12 using the same logic?
- A60
- B80
- C65
- D70
Solution & Step-by-step Explanation
Let's determine the logic connecting the pairs of numbers (X:Y):
First pair: 100 : 18
100−10=90
5
90
=18
Alternatively: (18×5)+10=90+10=100
Second pair: 90 : 16
(16×5)+10=80+10=90
The logic is: X=(Y×5)+10
Finding the required number related to 12:
X=(12×5)+10
X=60+10=70
Hence, 70 is related to 12.
First pair: 100 : 18
100−10=90
5
90
=18
Alternatively: (18×5)+10=90+10=100
Second pair: 90 : 16
(16×5)+10=80+10=90
The logic is: X=(Y×5)+10
Finding the required number related to 12:
X=(12×5)+10
X=60+10=70
Hence, 70 is related to 12.