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
`(4)/(3)` hours ⇒ 100 problems

Then, 1 hour ⇒ "n" problems

So, by chris cross method.

`(4)/(3) * n = 1 * 100`

`(4)/(3)n = 100`

`n = (3)/(4) * 100\\\\n = 3 * 25 = 75`

Hence, she can solve 75 questions per hour.