Question

Brian can type 1 1/3 pages every 20 minutes. how many pages can he type in 2.5 hours?

Answer 1

Answer:

10 pages can he type in 2.5 hours

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity as 1 such as 3 meter per seconds or 2 miles per hour.

As per the statement:

Brian can type 1 1/3 pages every 20 minutes.

Number of page he type = $1\frac{1}{3} = \frac{4}{3}$

then by definition of unit rate:

$\text{Unit rate per minutes} = \frac{\frac{4}{3} }{20} =\frac{4}{3} \cdot \frac{1}{20}=\frac{1}{15}$ pages

Use conversion:

1 hour = 60 minutes.

Then;

$\text{Unit rate per hour} = \frac{1}{15} \cdot 60 = 4$ pages.

We have to how many pages can he type in 2.5 hours.

$\text{Number of pages he type in 2,5 hours} = \text{Unit rate per hour} \times 2.5$

Substitute the given values we have;

$\text{Number of pages he type in 2,5 hours} = 4 \times 2.5 = 10$

Therefore, 10 pages can he type in 2.5 hours

Answer 2

4/3 pages per 20min

2.5 hrs = 150 min

150min ÷ 20min = 7.5min × 4/3 pages = 30/3 = 10 pages for 2.5 hrs