11129544 11129544
  • 01-11-2019
  • Mathematics
contestada

can solve 100 math problems every 4/3 hours. How many math problems does she solve per hour?

Respuesta :

iwillanswer iwillanswer
  • 07-11-2019

She can solve 75 questions per hour.

Solution:

Given that, a lady can solve 100 math problems every 4/3 hours.  

We have to find how many math problems does she can solve per hour?

Now, according to the given information.

In [tex]\frac{4}{3}[/tex] hours ⇒ 100 problems

Then, 1 hour ⇒ "n" problems

So, by chris cross method.

[tex]\frac{4}{3} \times n = 1 \times 100[/tex]

[tex]\frac{4}{3}n = 100[/tex]

[tex]n = \frac{3}{4} \times 100\\\\n = 3 \times 25 = 75[/tex]

Hence, she can solve 75 questions per hour.

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