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The graph above shows the number of schools per city for five small cities. Cities M and N each have 500 students per school. City P has 400 students per school. Cities Q and R each have 700 students per school. Which of the five cities has the greatest number of students?
- ACity M
- BCity P
- CCity Q
- DCity R
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Correct answer: C
Take each city’s number of schools and multiply by the number of students. It is not necessary to calculate all 5 of these.
Cities M and N have the same number of students, so just calculate the number of students in City M because it has more schools than City N.
The same goes for Q and R — only Q needs to be calculated because it has more schools than R.
M= 8 × 500 = 4,000
P = 9 × 400 = 3,600
Q = 6 × 700 = 4,200
City Q has the greatest number of students.