Question

For the construction of a bridge, 6400 labourers were employed initially. How many labourers will be left after two years if 25% labourers are to be discontinued every year?



Ans plz...​

Answer 1

Step-by-step explanation:

At starting 6400 labourers are there.Then after first year 20%of 6400 =1280 labourers left so only 5120 labourers left.Then after 2nd year again 20% of the labourers left after first year left which means 20% of 5120 which is1024 then after 2nd year only 4096 labourers were left

correction in place of 20% ot should be 25%

25% of 6400=1600. After 1st year 6400-1600=4800 labourers left. then after 2nd year 25%of 4800 =1200 labourers left so only 3600 labourers were still working

Answer 2

Step-by-step explanation:

At starting 6400 labourers are there.Then after first year 20%of 6400 =1280 labourers left so only 5120 labourers left.Then after 2nd year again 20% of the labourers left after first year left which means 20% of 5120 which is1024 then after 2nd year only 4096 labourers were left

correction in place of 20% ot should be 25%

25% of 6400=1600. After 1st year 6400-1600=4800 labourers left. then after 2nd year 25%of 4800 =1200 labourers left so only 3600 labourers were still working