Question

If 39 men can dig a canal in 15 days, in how many days can 45 men dig a canal whose length is double this canal?​

Answer 1

★ GivEn :-

39 Men can dig a Canal in 15 days

★ To Find :-

How many days it takes to dig 45. Mens when the Length of the canal is doubled.?

★ Solution :-

$\bold{ \pink{★39 \: Men \: can \:dig \: it \: in = 15 \: days }{} }{}$

$\bold{ \red{★Timetaken \: by \: 1 \: man = 15 \times 39days}{} }{}$

$\bold{ \red{★Time \: taken \: by45men = 15 \times \frac{39}{45 } days}{} }{}$

45 Men can dig the same canal in 13 days.

Given that Canal size is doubled

Hence 45 Men can dig the Canal in = 2*13 days

= 26 days when the canal is doubled.

$\boxed{ \bold{ \red{★Hence \: it \: takes \: 26 \: days when canal is doubled }{} }{} }{}$

Answer 2

Given :-

39 Men can dig a Canal in 15 days

To Find :-

How many days it takes to dig 45. Mens when the Length of the canal is doubled.?

Solution :-

$\bold{ \pink{39 \: men \: can \:dig \: it \: in = 15 \: days }{} }{}$

$\bold{ \red{timetaken \: by \: 1 \: man = 15 \times 39days}{} }{}$

$\bold{ \red{time \: taken \: by45men = 15 \times \frac{39}{45 } days}{} }{}$

45 Men can dig the same canal in 13 days.

Hence 45 Men can dig the Canal in = 2*13 days

= 26 days when the canal is doubled.