Seats of IT, mechanical and civil in a college are in ratio 4 : 4 : 5. If it is decided to increase the seats by 20%, 50% and 20% respectively in these branches what will be the ratio of increased seats.
A4 : 4 : 5
B4 : 3 : 7
C4 : 5 : 5
D3 : 6 : 7
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