Information and IdeasHardSupporting a share claim with the total
Information and Ideas practice question
Pupils' chosen instruments at a school:
Piano: 48
Guitar: 36
Violin: 24
Drums: 12
A music teacher claims that piano accounts for two fifths of all instrument choices. Which choice most effectively uses data from the table to support the claim?
- A. Piano was chosen by 48 of the 120 pupils, which is 40%, or two fifths.Correct
- B. Piano was chosen by more pupils than any other instrument.
- C. Piano was chosen by four times as many pupils as drums.
- D. Piano was chosen by 48 pupils.
Answer: A. Piano was chosen by 48 of the 120 pupils, which is 40%, or two fifths.
A share requires the total: 48 of 120 is 40%.
Why the other answers are wrong
- B. Piano was chosen by more pupils than any other instrument.
- Most popular doesn't establish the fraction.
- C. Piano was chosen by four times as many pupils as drums.
- A comparison with one instrument, not the whole.
- D. Piano was chosen by 48 pupils.
- A count without the total.
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