Question 10

# Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.78 : 117 :: 90 : ? :: 108 : 162

Solution

78 + 78/2 = 78 + 39  = 117
108 + 108/2 = 108 + 54 = 162
Similarly,
90 + 90/2 = 90 + 45 = 135

$$\therefore$$ The correct answer is option D.