10% साधारण ब्याज दे रहे बैंक में स्टेला को हर मही
कितनी राशि जमा करनी चाहिए अगर वह चाहती है कि 3 वर्ष बाद उसे ₹3324 मिलें?
(a) ₹60
(c) ₹75
(b) ₹85
(d) ₹80
Plz solve the problem
Answers
Answered by
14
answer
d) ₹80
Step-by-step explanation:
r=10%
t= 3year = 36month
m+SI = 3324 (here m= total money deposite in3 year)
m=36M =? (here M= money deposite in one month
SI = MRT/100
SI¹ = MX10X1/(100X12) (NOTE: SI¹ =SI FOR FIRST MONTH)
TIME 1MONTH = 1/12 YEAR
SI²= 2MX10X1/(100X12)
SI³= 3MX10X1/(100X12)
.
.
.
.
SI³⁶=36MX10X1/(100X12)
SI¹ +SI² +SI³+............+SI³
= (1+2+3+........+36)MX10X1/(100X12)
=(36/2)(1+36)M/120 (here sum of AP = (n/2)(a+n))
= 18X37M/120
=111M/20
SI= MX111/20
m+SI= 36M+MX111/20 =3324
831M/20 =3324
M=3324x20/831
M=80
when stella deposte ₹80 per month she will get 3324in 3 year.
Similar questions