Question

During a reading test, Enrique reads a passage with 640 words. It takes him 4 minutes to

Answer 1

Answer:

5 minutes

Step-by-step explanation:

4 / 640 = 0.00625

800 x 0.00625 = 5

Answer 2

It takes 5 minutes to read a passage that has 800 words with the same speed.

SOLUTION:

Given that, during a reading test, Enrique reads a passage with 640 words. It takes him 4 minutes to read the passage.  

We have to find time taken by Enrique to read a passage that has 800 words if he reads at the same speed  

Now, we know that,  

$640 \text { words } \rightarrow 4 \text { minutes }$

Then, $800 \text { words } \rightarrow \text { (let it be) n minutes }$

So, by cross multiplication method  

$\Rightarrow n \times 640=4 \times 800 \rightarrow n \times 64=4 \times 80 \rightarrow n \times 16=80 \rightarrow n \times 2=10 \rightarrow n=5$

Cross multiplications steps: (To find Single Variable)

Step 1: Multiply the numerator of the left-hand fraction by the denominator of the right-hand fraction.

Step 2: Multiply the numerator of the right-hand fraction by the denominator of the left-hand fraction.

Step 3: Set the two products equal to each other.

Step 4: Solve for the variable.