If you want an online presentation, I think you mean by a website.
Best thing you can find is Google Slides.
if you want a program,
LibreOffice is your best bet. It is completely free and it is for Linux, Windows and possibly Mac.
Explanation:
The ratio of Boys = 4x
The ratio of Girls = 5x
The Number of Boys in the School = 4x + 5x = 1080
= 9x = 1080
= x = 1080/9
<em> </em> = x = 120
The ratio of Boys = 4x = 4 x 120 = <em>480</em>
The ratio of Girls = 5x = 5 x 120 = 600
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Answer :- <u><em>The ratio of Boys =480</em></u>
It depends on HOW much money is circulating. If governments just print money with nothing to back it, hyperinflation occurs. If there's a bit too much money and credit, inflation happens. Generally, 3% inflation is considered normal and a healthy amount by economists.
It's neat organized and ready to find when needed