Question

45 men complete a work in 15 day. if 30 men join them, how many days will they take to complete the work?​

Answer 1

Answer:

9 days

Step-by-step explanation:

total work by 45 men in 15 days is

45×15 man days

if 30 men are added total men is 75 and number of days be 'X'

as work is same

45×15=30×X

X=9