Given,
Initial amount in Kalaivani's bank account = ₹ 5000
She deposited ₹ 2000 in January and withdrew ₹ 700 in February.
Again, she deposited ₹ 1000 and withdrew ₹ 500 in March.
[1]
Now, Kalaivani's bank balance on 01.04.2018
= ₹ 5000 + ₹ 2000 - ₹ 700 + ₹ 1000 - ₹ 500
= ₹ 6800
[2]