Five spray paint machines work together can finish painting a house in 36 minutes.if 2 machines break down , then in how much time can the remaining machines will complete the job?
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Answered by
22
no. of machines is inversely proportional to amount of time.
therefore,
5 = k × 1/36
k = 5 × 36 = 180
if 3 machines are left,
3 = k × 1/x
3 = 180/x
x = 180/3 = 60
therefore, if 2 machines break down the job will be completed in 60 minutes.
therefore,
5 = k × 1/36
k = 5 × 36 = 180
if 3 machines are left,
3 = k × 1/x
3 = 180/x
x = 180/3 = 60
therefore, if 2 machines break down the job will be completed in 60 minutes.
rohanharolikar:
it's inversely proportional. the more machines that work, the less time is required.
for example, if you and 3 others work to paint a wall, it would take less time than if you alone painted it
it's the same thing
now do you understand
yes thanks a lot
thankyou very much
no prob
what is k in the problem
k is the constant of proportionality
the quotient of one term and the other is always constant
Answered by
2
Answer:
60 minutes.
Step-by-step explanation:
= x × 1/36 = 5
x × 5×36 = 180
if three machines are left ,
= x × 1/x = 3
180x = 3
x = 180/3 = 60 minutes.
I hope it will help u .
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