Question

Chapter 9
Comparing Quantities
many workers were working during the fourth year?
12. 1000 workers were employed to construct a road in four years. At the end of the first year,5%
retrenched. The number of workers was increased by 20% at the end of the third year. How
the total workers were retrenched. At the end of the second year, 10% of the workers were​

Answer 1

Answer:

9405

Step-by-step explanation:

Initially No of worker =10000

After 1st year 10% worker left

therefore No of worker after 1st year =10000−10000×

100

10

=9000

After 2nd year 5% worker left

therefore No of worker after 2nd year =9000−9000×

100

5

=8550

After 3rd year 10% worker increase

therefore No of worker after 3rd year =8550+8550×

100

10

=9405

So the at the end of 4th year no of worker =9405