Answer :

199 textbooks. 100x.99=99 add 99 to 100 and the sum is equivalent to 199

Answer:

100 textbooks increased by 99% is, 199

Step-by-step explanation:

As per the statement:

100 textbooks increased by 99%

To find the number of  increased textbook.

Original number of textbook = 100

Increase percentage = 99%

then;

[tex]\text{increase textbook} = 100 \times \frac{99}{100}[/tex]

Simplify:

[tex]\text{Increase textbook} = 99[/tex]

then;

[tex]\text{Number of textbook increased} = 100 + 99 = 199[/tex]

therefore, 100 textbooks increased by 99% is, 199