14 masons can build a wall 12 metres high in 12 days. How many masons will be needed to build a wall 120 metres high in 7 days?
Solution:
As the Height of wall increase, the more masons will be needed. so, It is a direct proportion.
As the working days decrease, the more masons will be needed. It is a Inverse proportion.
Let the numbers of masons be x then,
Here the equation will be
`\frac{x}{14}` = `\frac{120}{12}` x `\frac{12}{7}`
Or
x = `\frac{120}{12}` x `\frac{12}{7}` x 14 Masons
by simplifying we get
x = 240 Masons
Thus, 240 Masons will be needed to construct the required wall.
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© 2022-23 Academic Skills and Knowledge (ASK)
Note: Write me in the comments box below for any query and also Share this information with your class-fellows and friends.
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