A person pays Rs. 975 in monthly instalments, each instalment is less than former by Rs. 5. The amount of first instalment is Rs. 100. In what time will the entire amount be paid? (a) 26 months (b) 15

Shoaib · 11 Dec 2023

So therfore it will be both a and b which is option c

Shoaib · 11 Dec 2023

n/2 [ 100 x 2 + ( n - 1 ) -5 ] , now simply try both he options a and b and you will get the answer 975 t

Shoaib · 11 Dec 2023

C

Sahana · 6 Dec 2023

All the next month's will be with -5 rupees and starting initial amount is 100 .. then start from 100 by going on -5

Sahana · 6 Dec 2023

100 +95+90+85+80+75+70+65+60+55+50+45+40+35+30

Abhi · 6 Dec 2023

a=100 d=-5 Sn = n/2( 2*100 -5 (n-1)) 975= n/2(200-5n+5) 1950 = 205n -5n^2 n^2-41n+390=0 so we get n= 15 and n= 26 .... Since 15 is the smaller value... Answer is 15

Kancharla · 6 Dec 2023

Howw

Sahana · 6 Dec 2023

15 months

Kancharla · 6 Dec 2023

Can anyone explain

Abhi · 6 Dec 2023

Answer is (b)

Himanshu · 6 Dec 2023

(b)15 months

sandhiya · 6 Dec 2023

D