ThinkingTime ThinkingTime

04-07-2020
Mathematics

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maths question pls answer

maths question pls answer class=

Respuesta :

ZetaFox ZetaFox

04-07-2020

Answer:

answer should be 52.4 mins

Step-by-step explanation:

find the midpoint for each time:

1. 15mins = 7students

2. 45mins = 27 students

3. 75mins = 12 students

4. 100 = 4students

Then, do the normal mean calculation by adding up all the values and dividing it by 50.

7*15 + 27*45 + 12*75 + 100*4 = 2620

2620/50 = 52.4mins

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