aniyahchandlersunday
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(L2) It takes Suzy 100 minutes to complete her homework assignments. It takes Johnny 2 hours to complete his.
How long (in minutes) will it take both of them to complete their assignments if working together? Round to the
nearest tenth, if necessary.

Respuesta :

Suzy completes 1/100 of her homeworks per minute.

Johnny completes 1/120 of his homeworks per minute.

Together, they complete

[tex]\dfrac{1}{100}+\dfrac{1}{120}=\dfrac{11}{600}[/tex]

of their homeworks per minute. So, it takes them

[tex]\dfrac{600}{11}\approx 54.5[/tex]

minutes to complete the homeworks together.

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