Question

The SI on a certain sum of money for 3 years at 12% per annum is 120 more than SI on same sum for
3 years at 10% per annum. Find the sum.
​

Answer 1

Answer:

2000......

Step-by-step explanation:

(P×12×3)/100 -(P×10×3)/100 = 120

6P/100 =120

P=2000

Answer 2

Answer:

7.2

Step-by-step explanation:

P= 120 ------ (i)

T=3 yrs

R=12%

SI =( PRT÷100)

SI= (120×12×3)÷100

=4320÷100

=43.2

P=120 -------(ii)

R=10%

T=3 yrs

SI =(PRT÷100)

= (120× 10x3)÷100

= 3600÷100

= 36

According to the question

= 43.2-36

= 7.2