Question

Jassi inherited 12000.00. She invested part of it
at 10% and the rest at 12% p.a. simple interest. Her
annual income from these investments is 1280.00.
How much did she invest at each rate.​

Answer 1

Answer:

Total money =12000Rs.

First investment =x Rs.

Second investment =(12000−x)Rs.

First income =

100

10

×x=

10

x

Second income =

100

12

(12000−x)

So

100

10x

+

100

12

(12000−x)=1280

⇒10x+144000−12x=128000

⇒144000−128000=2x

⇒x=

2

16000

=8000

12000−x=4000

Investments are 8000 & 4000 Rs.