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Oksi-84 [34.3K]
1 year ago
15

Student : teacher ratio at a school is 15: 1.

Mathematics
1 answer:
Juli2301 [7.4K]1 year ago
7 0

Answer:

300 students and 150 : 11

Step-by-step explanation:

(i)

sum the parts of the ratio , 15 + 1 = 16 parts

divide the total students/staff by 16 to find the value of one part of the ratio.

320 ÷ 16 = 20 , then

number of students = 15 × 20 = 300

(ii)

number of staff = 320 - 300 = 20

if 2 more teachers join the school then there is a total of 22 staff

student : teacher = 300 : 22 = 150 : 11

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