Question

Syam can build a wall in 12 days , Babulal can do in 15 days and Kishori in 18 days. In how many days will the wall be built if they all work together?
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Answer 1

Answer:

Step-by-step explanation:

according to the question

shaym's one day's work=1/12

babulal one day's work=1/15

kishori one day's work =1/18

if all do the work together then their one day work =1/12+1/15+1/18

hence we get (15+12+10)/180

so, theey will complete the whole work in =180/37days

Answer 2

$\bold\green{\underline{\underline{: GIVEN:}}}$

• Syam can build a wall in 12 days
• Babulal can build a wall in 15 days
• Kishori can build a wall in 18 days

$\bold\green{\underline{\underline{:SOLUTION:}}}$

• Syam one day work=1/12
• Babulal one day work=1/5
• Kishori one day work=1/18

$\bold\green{\underline{\underline{:A.T.Q:}}}$

• if they will build the wall by all together

$= \frac{1}{12} + \frac{1}{15} + \frac{1}{18} \\ \\ = \frac{15 + 12+ 10}{180} \\ \\ = \frac{37}{180} \\ \\ = \frac{180}{37} = 4 \frac{32}{37} \: days$

HENCE,

$\bold\purple{\boxed{They\: will\: build\:the\:wall=4\dfrac{32}{37}\:days}}$