The ratio of the incomes of A and B in 2020 was 5 ∶ 4. The ratios of their individual incomes in 2020 and 2021 were 4 ∶ 5 and 2 ∶ 3, respectively. If the total income A and B in 2021 was Rs.7,05,600, then what was the income (in Rs.) of B in 2021?
1
3,45,600
2
2,79,700
3
3,60,000
4
4,25,900