Q1 of 13 Page 93

On the construction work of a flyover bridge there were 320 workers initially. The number of workers were increased by 25% every year. Find the number of workers after 2 years.

Present number of workers = 320 workers, Rate (increase) = 25% (p.c.p.a), Duration (n) = 2 years


2


A = 320 (1+0.25)2


A = 320 (1.25)2


A = 320 (1.5625)


∴A= 500/-


∴ The number of workers after 2 years will be 500.


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