simple interest

Rohit Arora (IPCC, b.com(h)) (190 Points)

07 June 2011

hi, pls solve this question.......thanks in advance

peter invested an amount of rs.12000 at the rate of 10p.c.p.a and another amount atthe rate of 20p.c.p.a.simple interest.

the total interest earned at the end of the year on the total amount invested became 14p.c.p.a.

find the total amount invested..................................................?pls help

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hemant (job) (468 Points)
Replied 07 June 2011

Total amout invested is Rs. 20000

12000 @ 12% interest is Rs. 1200

8000 @ 20% interest is Rs. 1600

Total investment Rs,20000 total interest Rs. 2800

Interest on total investment Rs. 20000 @ 14% = Rs. 2800

Average interest rate is 14%

Sunshine (Helping All) (10575 Points)
Replied 07 June 2011

hie

let the 2nd amount invested be x

interest on x @ 20% for 1 year is x/5

total interest earned= 1200+ x/5

now

1200+ x/5 = 14% of total amount

1200+ x/5 = 14/100 *( x+ 12000)

solve and get x= 8000

so total amount invested= 12000+8000=20000

Vijay (Adamo Studio) (2112 Points)
Replied 07 June 2011

good explaination

Rohit Arora (IPCC, b.com(h)) (190 Points)
Replied 07 June 2011

THANKS A LOT I GOT IT.....................THANKS

CA ADITYA SHARMA (CA IN PRACTICE ) (16719 Points)
Replied 07 June 2011

Originally posted by : Sunshine...
	hie let the 2nd amount invested be x interest on x @ 20% for 1 year is x/5 total interest earned= 1200+ x/5 now 1200+ x/5 = 14% of total amount 1200+ x/5 = 14/100 *( x+ 12000) solve and get x= 8000 so total amount invested= 12000+8000=20000