Let the time taken by Anu, Tanu and Manu be
5x,8x and
10x hours.
Total work
=LCM(5x,8x,10x)=40x Anu can complete 8 units in one hour
Tanu can complete 5 units in one hour
Manu can complete 4 units in one hour
It is given, three of them together can complete in 32 hours.
32(8+5+4)=40x x= It is given,
Anu and Tanu work together for the first 6 days, working 6 hours 40 minutes per day, i.e.
36+4=40 hours
40(8+5)+y(4)=40x 4y=24 y=6 Manu alone will complete the remaining work in 6 hours.