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anonymous

  • 5 years ago

Nisha can solve a set of 5 math problems in 12 minutes. At this rate, how long will it take her to solve 20 sets of 7 math problems? F 58 minutes G 5 hours 16 minutes H 48 minutes J 5 hours 36 minutes

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  1. anonymous
    • 5 years ago
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    it is letter J.

  2. anonymous
    • 5 years ago
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    just follow these steps. 5/12=7/x x there is the time for a set do the cross multiplication. 5x=84 x=16.8, but there are 20 sets so, all we have to do is multiply this by 20. x=16.8(20)= 336 minutes 336 minutes is equal to 5 hours and 36 minutes.

  3. anonymous
    • 5 years ago
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    thank you so much

  4. anonymous
    • 5 years ago
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    you are welcome. can you become my fan?

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spraguer (Moderator)
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