man repays a loan of rupees 3250 by paying rupees 305 in the first month and then decrease the payment by rupees 15 every month how long will it take to clear is loan
Answers
Answer:
20 months
Step-by-step explanation:
YOU HAVE NOT MENTIONED ANY LOAN INTEREST RATE SO I SUPPOSE THAT NO INTEREST AMOUNT IS TO BE PAID.
MY CALCULATION
(1) 3250–305 = 2945
(2) 2945–290 =2655
(3) 2655–275 = 2380
(4) 2380–260= 2120
(5) 2120–245 = 1875
(6) 1875–230 =1645
(7) 1645–215 = 1430
(8) 1430–200= 1230
(9) 1230–185 = 1045
(10) 1045–170= 875
(11)875–155= 720
(12) 720–140= 580
(13) 580–125= 455
(14) 455–110 = 345
(15) 345–95= 250
(16) 250–80 = 170
(17) 170–65= 105
(18) 105–50= 55
(19) 55–35= 20
(20) 20–20=0
AS PER ABOVE CALCULATION, IT WILL TAKE TWENY MONTHS TO REPAY FULL LOAN AMOUNT.
Answer:
here is your answer :-
Step-by-step explanation:
let a=305 d= -15 sn= 3250
sn= n/2 [2a + (n-1)d]
3250 x 2= n [ 2x 305 +(n-1) x -15]
6500= n {610 + (-15n + 15)]
6500 = n [ 625 - 15n]
6500= 625n-15n^2
therefore,
15n^2 - 625n + 6500 =0
3n^2 - 125n + 1300 =0
(n-20) (3n+65) =0
n= 20 n= -65/3
since n cannot be -ve
therefore n=20
therefore, he would take 20 months.