Question

12 pumps can empty a water tank in 18 hours. How many hours will it take to empty the tank if
3 pumps are non - functional ?​

Answer 1

${\huge{\star{\underbrace{\tt{\red{Answer}}}}}}{\huge{\star}}$

$\Large{\blue{\tt{\underline{\underline{Given \ :-}}}}}$

${\sf{☞ \ Total \ pumps \ = \ 12}}$

${\sf{☞ \ Time \ taken \ = \ 18 \ hours}}$

$\Large{\purple{\tt{\underline{\underline{To \ find \ :-}}}}}$

${\mathfrak{✿ \ Time \ taken \ by \ 9 \ pumps \ to \ fill \ the \ tank }}$

$\Large{\orange{\tt{\underline{\underline{Solution \ :-}}}}}$

${\tt{❥ \ Since \ 3 \ pumps \ are \ non - functional }}$

${\sf{\hookrightarrow \ Remaining \ pumps \ = \ 12-3 \ ⟹ \ 9}}$

Now,

${\sf{\leadsto \ Time \ taken \ by \ 1 \ pump\ = \ \frac{18}{12}}}$

${\sf{\leadsto \ Time \ take \ by \ 9 \ pumps \ = \ \frac{\cancel {18}}{\cancel {12}}×9 \ \Rightarrow \ 13.5hours}}$

${\boxed{\pink{\sf \ Hence, \ time \ taken \ to \ fill \ tanks \ = \ 13.5hours }}}$

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Answer 2

Step-by-step explanation:

this is your complete solution

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