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1 March, 17:00

greg's father can mow the lawn on his riding mower in 45 minutes. It takes Greg 1 hour 45 minutes to mow the lawn with a push mower. What rational equation can be solved for the number of minutes t it would take them to mow the lawn working together?

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  1. 1 March, 17:19
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    1 = t/45 + t/105

    Step-by-step explanation:

    Greg's father mow a lawn in 45 minutes that means that he mow in a rate of 1/45

    Greg mow a lawn in 1 hour 45 minutes (105 minutes) that means that he mow in a rate of 1/105

    If they mow a lawn in t minutes that means the rate is 1/t

    Then, the rate in which they mow a lawn has to be equal to the sum of the rate individually as follows

    1/t = 1/45 + 1/105

    1 = t/45 + t/105
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