A cook earns ₹8,400 per month. If she spends 60% of it each month, how much will she save (in ₹) by one-fourth of a year?​

Correct option is A

Given:

Monthly earning = ₹8,400

Spending = 60% of earning

Saving = 40% of earning

Time = one-fourth of a year = 3 months

Formula Used:

Saving per month = Earning × Saving%

Total saving = (Saving per month) × (Number of months)

Solution:
Saving per month = ₹8,400 × 40% = ₹8,400 × 0.40 = ₹3,360
Total saving in 3 months = ₹3,360 × 3 = ₹10,080