Question

Sol. (1) Increase in Ist year ( =10 % ) Decrease in 2 nd year ( =10 % ) Effective result
( =left(10-10-frac{10 times 10}{100}right) % )
( =-1 % )
Increase in 3 rd year ( =10 % )
( therefore ) Effective result
( =left(10-1-frac{10 times 1}{100}right) % )
( =(9-0.1) %=8.9 % ) (increase)

# 52. The strength of a school increases and decreas- es in every alternate year by 10%. It started with increase in 2000. Then the strength of the school in 2003 as compared to that in 2000 was SSC CGL (Tier-In 2014 (1) increased by 8.9% (2) decreased by 8.9% (3) increased by 9.8% (4) decreased by 9.8% CG

Solution