Problem 8 · 2022 Math Kangaroo
Medium
Fractions, Decimals & Percents
fraction-to-decimal
How much does this Ferris wheel need to turn so that a white gondola is on top for the first time?
Show answer
Answer: D — 112 turn
Show hints
Hint 1 of 2
The gondolas are spread evenly around the wheel, so one step from gondola to gondola is always the same part of a full turn.
Still stuck? Show hint 2 →
Hint 2 of 2
Find the white gondola that is closest to the top and see how many steps it takes to get there.
Show solution
Approach: use the even spacing of the gondolas
- The wheel has 12 gondolas spaced evenly, so turning by one gondola is 112 of a full turn.
- The white gondola nearest the top is just one position away, so the wheel only needs to turn by one step.
- That is 112 turn.
- So the answer is D.
Mark:
· log in to save