17 is what percent of 20
1 answer:
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Answer:
7 students are needed
Step-by-step explanation:
Consider the complete question is,
"Students deliver catalogues and leaflets to houses.One day, they have to deliver 480 C and 1520 L.Each student can deliver either 15 C or 80 L in 1 hour.Each student's can only work for 8 hours. Work out the minimum number of students needed."
Since, number of catalogues have to deliver = 480,
Number of leaflets have to deliver = 1520,
∵ Each student can deliver 15 catalogues or 80 leaflets in one hour.
Number of hours for working = 8,
So, the catalogues delivered by each student in a day = 15 × 8 = 120,
Similarly, the leaflets delivered by each student in a day = 80 × 8 = 640
Thus, the number of students required to deliver 480 catalogues
Again, the number of students required to deliver 1520 leaflets
≈ 3 students ( we would approximate above )
Hence, the minimum students required = 4 + 3 = 7