13 pumps can fill a tank in 27 minutes .how much more time is required to fill the tank if 4 pumps sre removed
Answers
Answered by
5
Answer:
12 minutes more
Step-by-step explanation:
The number of pumps and the time taken to fill a tank are inversely proportional. In inverse proportion, the product remains constant.
Let the time taken be t.
=> 13 × 27 = (13 - 4) × t
=> 13 × 27 = 9 × t
=> 13 × 3 = t
=> t = 39 minutes
More time required = (39 - 27) minutes = 12 minutes
Answered by
1
Answer:
13 : 27
therefore 9 : ?
this is indirect proportion
13 x 27 ÷ 9
= 39 min
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