Kay spends 250 min/wk exercising. Her ratio of time spent on aerobics to time spent on weight training is 3 to 2. How many minutes per week

Question

Kay spends 250 min/wk exercising. Her ratio of time spent on aerobics to time spent on weight training is 3 to 2. How many minutes per week does she spend on aerobics? How many minutes per week does she spend on weight training?

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Tài Đức 3 years 2021-08-22T20:50:32+00:00 1 Answers 33 views 0

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    2021-08-22T20:52:22+00:00

    Time spent on aerobics is 150 minutes per week and time spent on weight training is 100 minutes per week

    Solution:

    Given that,

    Kay spends 250 min/wk exercising

    Therefore,

    Exercising = 250 minutes per week

    Ratio of time spent on aerobics to time spent on weight training is 3 to 2

    Aerobics : weight training = 3 : 2

    Let the time spent on aerobics be 3x

    Let the time spent on weight training be 2x

    Thus,

    3x + 2x = 250

    5x = 250

    x = 50

    Thus,

    Time spent on aerobics = 3x = 3(50) = 150

    Time spent on weight training = 2x = 2(50) = 100

    Thus, Time spent on aerobics is 150 minutes per week and time spent on weight training is 100 minutes per week

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )