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Explanation:
Let investment of Aarti during first year = 5x.
Investment of Vinitha during first year = 7x
Investment of Kamla during first year =6x
Then, their investment during second year are (126% of 5x) : (120% of 7x) : (115% of 6x)
= > (126\100 ×5x):(120\100 ×7x):(115\100 ×6x)
= > 630 : 840 : 690 = 21 : 28 :23