Question

Q21) Raj reads the book for 2 1/2 hours everyday . He completes the book in 8 days . How many hours in all did he take to read the book ?

Answer 1

Answer:

everyday 21 upon 2 hours

complete the book = 8 days

so, 21×8 upon 2 = 84 hours he all read the book

Answer 2

Given,

Raj reads the book for 2½ hours everyday.

He completes the book in 8 days.

To find,

Total number of hours taken by him to read the book.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Now,

Raj reads the book everyday for = 2½ hours = ⁵/₂ hours

Now, rest of the calculations will be basic multiplication.

So,

Total number of hours :

= Hours of reading in each day × Total days

= (⁵/₂ × 8) hours

= (5×4) hours

= 20 hours

(This will be considered as the final result.)

Hence, Raj took 20 hours to completely read the book.