Vani ma'am has three Tatva books, one for chemistry, physics and biology. The chemistry book had 120 pages, the physics book has 10% more pages and the biology book has 10% fewer pages. In a class, she went through 2.5%, 25% and 50% of the pages in the chemistry, physics and biology books respectively, then how many pages in total did she cover in the class?
Answers
Answered by
1
Answer:
90
Step-by-step explanation:
no. of pages in physics book:
120×110/100=132
no. of page in biology book:
120×90/100=108
pages cover in chemistry:
120×2.5/100
= 3
pages cover in physics:
132×25/100
=33
pages cover in biology:
108×50/100
=54
total pages cover in class:
3+33+54
=90
Similar questions