In a survey that asked about 75 people about their fitness schedules, 50 of the respondents said they spent an average of 45 minutes a day e

Question

In a survey that asked about 75 people about their fitness schedules, 50 of the respondents said they spent an average of 45 minutes a day exercising. The rest said they spent an average of 30 minutes a day exercising.

What is the average time spent exercising by all the respondents?

A. 42 minutes

B. 33 minutes

C. 38 minutes

D. 40 minutes

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Arya 4 weeks 2021-12-29T02:47:12+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-12-29T02:48:36+00:00

    Answer:

    D. 40 minutes

    Step-by-step explanation:

    0
    2021-12-29T02:49:10+00:00

    Average=mean

    Mean= sum of scores divided by number of scores

    50 responders spend 45 minutes

    The others spend 30 minutes

    75-50= 25

    So, 25 responders spend 30 minutes

    50*45+25*30 divided by 75 ( because 75 is the total number of responders)

    Which equals to 40 minutes

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45:7+7-4:2-5:5*4+35:2 =? ( )