Step-by-step explanation:
Let the number of books of Physics be x . Then , No. of chemistry books =3.5x
Now , according to question :
x+3.5x=90
Or , 4.5x=90
Or , x=90/4.5
Or , x=20
Now ,
3.5x= 3.5×20
= 70
Therefore , there were 70 chemistry books and 20 physics books in that question bank.
Answer: 48 books
Step-by-step explanation: Start by converting 60% to a decimal/fraction (60/100). From there, you can multiply it by the total (80) to get the answer.
0.04444444444All you have to do is divide 2/3 by 3/5.
The answer is 5 and six because you add
Answer:
Step-by-step explanation:
a² + b² = (a + b)² - 2ab
