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sergeinik [125]
3 years ago
8

There are 120 people in a school canteen.

Mathematics
1 answer:
cluponka [151]3 years ago
8 0

2:1

Step-by-step explanation:

List all variables

Total people=120

year 11 students=120/2=60

year 10 students=60/3=20

subtract year 10 and 11 students from the total to get the number of year 9 students

year 9 students=120-60-20

=40

year9:year10

40:20

2:1

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