Information and IdeasEasy–MediumChoosing the row that supports a claim about cost
Information and Ideas practice question
A council compared the yearly cost of three streetlight types.
Type | Cost per light (£)
Sodium | 60
Halogen | 75
LED | 20
The council recommends switching to LED lights, noting that ____
Which choice most effectively uses data from the table to complete the statement?
- A. at £20 a light per year, LEDs cost a third of sodium lights and less than a third of halogen lights.Correct
- B. halogen lights cost £75 a year.
- C. sodium lights cost £60 a year.
- D. LEDs are the newest type.
Answer: A. at £20 a light per year, LEDs cost a third of sodium lights and less than a third of halogen lights.
20 against 60 and 75.
Why the other answers are wrong
- B. halogen lights cost £75 a year.
- A rival's cost alone.
- C. sodium lights cost £60 a year.
- A rival's cost alone.
- D. LEDs are the newest type.
- Not in the table.
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