Answer:
Mary can read 100 pages in 2 hour and 16 minutes.
Step-by-step explanation:
Given:
Number of pages Mary can read = 22
Time taken to read 22 pages = 30 minutes.
We need to find time required to read 100 pages.
Solution:
We will first find time required to read 1 page.
Now we know that;
22 pages = 30 minutes
1 page = time required to read 1 page
By using Unitary method we get;
time required to read 1 page = [tex]\frac{30}{22} = 1.36 \ minutes[/tex]
Now we can say that;
1 page = 1.36 minute
100 page = time taken to read 100 pages.
Again by using Unitary method we get;
time taken to read 100 pages = [tex]1.36 \times 100 = 136\ minutes[/tex]
Now we know that;
1 hour = 60 minutes
Number of hours in 136 minutes =136 minutes.
Again by using unitary method we get;
Number of hours in 136 minutes = [tex]\frac{136}{60}=2.26\ hrs[/tex]
Now Converting 0.26 hr into minutes we get
Now [tex]0.26 \ hr = 0.26 \times 60 = 15.6\ min[/tex]
Now rounding 15.6 minute to nearest minute we get;
Number of hours Mary can read 100 pages = [tex]2\ hrs \ and \ 16 \ min[/tex]
Hence Mary can read 100 pages in 2 hour and 16 minutes.
