Select the option that is related to the third number in the same way as the second number is related to the first number:
15 : 350 :: 12 : ?
Answer & explanation
Correct answer: option 2
a : a2 + (\(\frac{a}{3}\))3
⇒ 15 : (15)2 + (\(\frac{15}{3}\))3
⇒ 15 : (15)2 + (5)3 = 225 + 125 = 350
⇒ 15 : 350
Similarly,
⇒ 12 : (12)2 + (\(\frac{12}{3}\))3
⇒ 12 : (12)2 + (4)3 = 244 + 64 = 208
⇒ 12 : 208