Question

Solve question no 15 fast​

Answer 1

number of days taken by 1st catalyst cover the round=360÷48=7.5 days = 7.5×24 hours= 180 hours

distance covered by 2nd catalyst per day =60 km.

=360÷60= 6 days = 6×24 hours=144hour

distance covered by 3rd catalyst per day=72 km.

=360÷72=7.5 days =7.5 ×24 hours =120hours

now ,the shortest distance will be LCM of 180,144 and 120 =720

and, 720 hours = 720÷24 days = 30 days