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masaiyahrhemanow
15.02.2021 •
Mathematics
22. A question bank has questions of Physics and
Chemistry. The number of questions of Chemistry
are 3.5 times the number of questions of Physics.
If there are 90 questions in the question bank, find the
number of questions of Physics and Chemistry in the
question bank.
Solved
Show answers
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Ответ:
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.
Ответ:
Man I don't literally know
Step-by-step explanation:
Ответ:
To make comparing easier, convert all the numbers to decimals. Then, plot those decimals on a number line and compare them!