If the price of smartphones rises and demand for bike helmets falls, smartphones and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
English • basic-concepts
Last updated on 2026-02-07
Three 10-question bundles from our Economics Basic Concepts quiz library.
Bundle 1
Bundle ID: 1200000021
If the price of smartphones rises and demand for bike helmets falls, smartphones and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for bus rides falls, bus rides is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of bus rides rises and demand for headphones increases, bus rides and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of bus rides rises and demand for bike helmets falls, bus rides and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for movie tickets falls, movie tickets is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of movie tickets rises and demand for headphones increases, movie tickets and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of movie tickets rises and demand for bike helmets falls, movie tickets and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for bottled water falls, bottled water is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of bottled water rises and demand for headphones increases, bottled water and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of bottled water rises and demand for bike helmets falls, bottled water and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
Bundle 2
Bundle ID: 1200000022
If income rises and demand for gym memberships falls, gym memberships is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of gym memberships rises and demand for headphones increases, gym memberships and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of gym memberships rises and demand for bike helmets falls, gym memberships and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for textbooks falls, textbooks is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of textbooks rises and demand for headphones increases, textbooks and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of textbooks rises and demand for bike helmets falls, textbooks and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for laptops falls, laptops is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of laptops rises and demand for headphones increases, laptops and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of laptops rises and demand for bike helmets falls, laptops and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for fresh fruit falls, fresh fruit is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
Bundle 3
Bundle ID: 1200000023
If the price of fresh fruit rises and demand for headphones increases, fresh fruit and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of fresh fruit rises and demand for bike helmets falls, fresh fruit and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for furniture falls, furniture is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of furniture rises and demand for headphones increases, furniture and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of furniture rises and demand for bike helmets falls, furniture and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for bicycles falls, bicycles is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of bicycles rises and demand for headphones increases, bicycles and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
If the price of bicycles rises and demand for bike helmets falls, bicycles and bike helmets are:
Score: 0 / 10Pick an answer —
Complements move together in demand.
If income rises and demand for streaming subscriptions falls, streaming subscriptions is:
Score: 0 / 10Pick an answer —
Inferior goods see demand fall as income rises.
If the price of streaming subscriptions rises and demand for headphones increases, streaming subscriptions and headphones are:
Score: 0 / 10Pick an answer —
Substitutes move in opposite price-demand directions.
How should I use these quizzes?
Skim the questions once, then answer without overthinking. After each bundle, reflect on why the correct answer fits best.
Can I replay a bundle?
Yes. Use the Play Quiz button to redo any bundle and watch for new explanations you may have missed.
Do the flash cards match the quizzes?
Yes. Each flash card set mirrors the same questions so you can drill answers quickly.
What if I only have five minutes?
Pick one bundle and run through it. Ten focused questions give a solid micro-practice session.
Will harder sets arrive?
We regularly publish fresh bundles across easy, medium, and hard levels. Check back often.
Keep going
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