Question

if 42 men can dig a trench in 14 days, then 1 man can dig it in - days​

Answer 1

From the question,

48 men can dig a trench in 14 days

1 man can dig a trench in =(14×48) days .. [ less men, more days]

∴28 men can dig a similar trench in =(14×48)/28

=24 days ...[ More men, less days]

Hence, the required number of days for 28 men to dig a trench =24.