thomas deposits 7000 rupees in all in two banks . the rate of interest is 8 percent and 11 percent in the other. after a year . he got 680 rupees as interest from both banks together. how much did he deposit in each bank?
Answers
Answered by
0
Answer:
ANSWER
Let x,y,z be the amounts deposited in different savings accounts
x in 5% savings account,y in 8% savings account,z in 8.5% savings account
x+y+z=7000
5x+8y+8.5z=55000
given that x=y
writing above linear equations in matrix form
[
2
26
1
17
][
x
z
]=[
7000
110000
]
[
x
z
]=
8
1
[
17
−26
−1
2
][
7000
110000
]
[
x
z
]=[
1125
4750
]
Similar questions