Question

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

Answer 1

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 $\frac{4}{3}$ hours ⇒ 100 problems

Then, 1 hour ⇒ "n" problems

So, by chris cross method.

$\frac{4}{3} \times n = 1 \times 100$

$\frac{4}{3}n = 100$

$n = \frac{3}{4} \times 100\\\\n = 3 \times 25 = 75$

Hence, she can solve 75 questions per hour.