MathGrit
ProblemsTechniquesPricing
Sign inGet started
  1. Home
  2. /Problems
  3. /Complex Number Ratio Equals 4i
Back to problems

Complex Number Ratio Equals 4i

1800SpecialistComplex NumbersAlgebra

AIME I · 2009 · Problem 2

There is a complex number $z$ with imaginary part $164$ and a positive integer $n$ such that $$\frac {z}{z + n} = 4i.$$ Find $n$.
0 students attempted0% solvedRating 1800

Related practice paths

AIME PracticeInteger-answer practice for deeper multi-step problems.How to Qualify for AIMEScore goals, contest choice, and prep habits for AIME hopefuls.How to Review Missed AMC ProblemsTurn missed problems into a repeatable improvement loop.

Ready to check your answer?

Create an account to submit answers, save history, and track your rating.

Progressive Hints5

Unlock hints one at a time — each reveals a little more without spoiling the solution.

Step-by-Step Solutions4

Multiple solution approaches with detailed walkthroughs, unlocked after you solve the problem.

AI-Powered Grading

Instant feedback on your answer — handles fractions, decimals, and equivalent forms.

Curated problem bank

Supported tracks for AMC, AIME, MATHCOUNTS, and olympiad-style training, plus global problem sources like UKMT, Euclid, and Kangaroo.