It took 20,000 workers to build the Taj Mahal in 20 years. How many workers would be required to build it in 10 years?
Answers
Answered by
3
it is a case of inverse proportion.
20 years= 20,000
1 year = 20,000× 20=400,000
10 years = 400,000÷10=40,000
ANS-40,000 WORKERS
20 years= 20,000
1 year = 20,000× 20=400,000
10 years = 400,000÷10=40,000
ANS-40,000 WORKERS
skprince:
thnks but it was a tricky question. Taj Mahal has already built so no more workers is required to build it again.
Answered by
6
This question can be solved by unitary method as well as proportion.
I will be showing you both the ways
Unitary method
20 years is required for the Taj Mahal to be built by 20,000 workers
1 year is required for the Taj Mahal to be built by 20,000*20 workers (As more man power is required)
10 years is required for the Taj Mahal to be built by (20,000*20)/10 workers=40,000 workers(Ans)
Proportion(Inverse)
Since x is greater than 20000, Its an inverse proportion
x:20000::20:10 (x is the number of workers)
Where,
x=20000*20/10=40,000 workers(Ans)
I will be showing you both the ways
Unitary method
20 years is required for the Taj Mahal to be built by 20,000 workers
1 year is required for the Taj Mahal to be built by 20,000*20 workers (As more man power is required)
10 years is required for the Taj Mahal to be built by (20,000*20)/10 workers=40,000 workers(Ans)
Proportion(Inverse)
Since x is greater than 20000, Its an inverse proportion
x:20000::20:10 (x is the number of workers)
Where,
x=20000*20/10=40,000 workers(Ans)
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