Answer:

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Answer:

10% of 400 = 400/100 ×10 =40

in 2018 total seats = 400+40 = 440

now seats = 440

10% of 440 = 440/100 ×10 = 44

increase in seats is =44

so, in 2019 seats = 440 + 44 = 484 ans .

option (b)

if it is not compound

then ,

2 years 40+40 increase

simple

=480