Vinu and Savi are partners in a firm. Vinu withdrew ₹800 per month at the beginning of every month for 6 months ending on 31st December 2021. Savi withdrew ₹800 per month at the end of every month for 6 months ending on 31st December 2021. Calculate interest on drawings @15% per annum on 31st December 2021.

Vinu ₹210, Savi ₹150

The correct answer is option 2- Vinu ₹210, Savi ₹150. 

VINU:
Total drawings = 800 x 6
                        = 4,800
Interest = 15% p.a.
Ist drawing = 1 july, months left 6
Last drawing = 1 Dec,  months left 1
Average period = (6+1)/2
                         = 3.5 months
Interest on Vinu drawings = 4,800*15/100*3.5/12
                                          = ₹210

SAVI:
Total drawings = 800 x 6
                        = 4,800
Interest = 15% p.a.
Ist drawing = 31 july, months left 5
Last drawing = 31 Dec,  months left 0
Average period = (5+0)/2
                         = 2.5 months
Interest on Savi drawings = 4,800*15/100*2.5/12
                                         = ₹150