Question

550 people can complete a work in 100 days. After 10 days start of work 50 more people join. In how many more days now the work will complete

Answer 1

Heya

550 people' work in 100 days = 1

=> 550 people one day work = 1/100

=> 10 people one day work = 1/5500

=> 550 people 10 days work = 1/10

=> Remaining Work = 9/10

∆ Time Required for completing 9/10 work =
$\frac{9}{10} \times \frac{550}{6}$

= 8.25 days

= 8 days 6 hours !!