A man spends rs. 1800 monthly on an average for the first four months and rs. 2000 monthly for the next eight months and saves rs. 5600 a year. his average monthly income is
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total spends in 1st 4 month= 1800×4=7200
---------------------nxt 8 --------=2000×8=16000
saving= 5600
his total earn in 12 months = 7200+16000+5600=28,800
so his monthly average income=28800÷12=2400
---------------------nxt 8 --------=2000×8=16000
saving= 5600
his total earn in 12 months = 7200+16000+5600=28,800
so his monthly average income=28800÷12=2400
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