Its me again with another Math question:
If 12 men take 7 days to paint a house, how long will 5 men take to paint the same house?
May I ask ....... If 12 men take 7 days to paint a house, will fewer men take more or less than 7 days to paint the same house?
More?
Yes, you are definitely right!
Therefore, the pattern for this queston is when one side reduce (e.g. men), the other side will increase (e.g. days).
Let's use this logic to solve the question:
If 12 men take 7 days to paint a house, how long will 5 men take to paint the same house?
Solution:
12 men ----> 7 days
1 man (12 men divide by 12) ----> 84 days (7 days multiply by 12)
5 men (1 man multiply by 5) ----> 16.8 days (84 days divide by 5)
Answer: 5 men will take 16.8 days to paint the same house.
I'm glad that you understood how to solve this question.
Thats all for today.
Bye .......
1 comment:
Hi Norman, looking forward to more interesting Maths teaching from you. :)
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