34. ARITHMETIC: Ratios and proportions (compound rule of three)

Learn how to solve problems with compound rule of three.

[qtbqbwi]

This is the best Tutorial I have seen for compounded proportion. You have no idea how much you have helped me. Thank you!
I have also subscribed to this channel.

[teng-ntjm]

this is the best tutorial i ever seen of compound rule of three you saved me many time thanks!

[garimamahajan]

Thank you so much sir... Making such difficult problems wayyyy too easy 😇

[qtbqbwi]

Thank you for this tutorial. I have been struggling with this concept still. Can you help me solve this question.
Two cogged wheels, of which one has 16 cogs and
the other has 27, work into each other. If the latter
turns 80 times in three quarters of a minute, how
often does the other turn in 8 seconds?