Answer: The money will last for around 5.6 weeks.
Explanation:
No. of weeks the money will last if ₹1400 is spent per week = 6
The total money she has = Amount spent in a week x No. of Weeks
= 1400 x 6
= ₹8400
No. of weeks the money will last if ₹1500 is spent per week = 8400/1500
= 5.6 weeks.