Question

MATH SEAATEMZ OF EQUATION
I

Answer 1

Answer:

(i) Mutual fund = 1000 RMB

(ii) Govt Fund = 2000 RMB

(iii) Saving account =7000 RMB

Step-by-step explanation:

Let (i)He invested x RMB in mutual fund

then(ii) The amount invested in Govt fund=2x RMB

(iii) The amount in Saving account

=10000-(x+2x)=10000-3x

he recived interest from 3 places as:

(i)  From mutual fund =x*4*1/100=4x/100

(ii) From Govt fund  = 2x*5*1/100=10x/100

(iii) From Saving account = (10000-3x)*4.5*1/100=(45000-13.5x))/100

Total interest=4x/100+10x/100+(45000-13.5x)/100=455

1/100(4x+10x+45000-13.5x)=455

14x-13.5x+45000=45500

0.5x=45500-45000

0.5x=500

x=500/0.5=1000

Hence the fund invested is as:

(i) Mutual fund =x= 1000 RMB

(ii) Govt Fund =2x=2*1000= 2000 RMB

(iii) Saving account =10000-3*1000

=10000-3000

=7000 RMB