Question

13.Ashok invested $3,000 gor 2years and $2,500for 3years at the same rate of interest. he received a total interest of $810.find the rate of interest ​

Answer 1

Answer:

Step-by-step explanation:

principal 1`= 3000

principal 2=2500

t1=2

t2=3

interest=810

simple interest=3000*R*2/100+2500*R*3/100

810=60R+75R

810=135R

R=810/135

R=6 years

Answer 2

Answer:

I.) Principle = 3000

Time= 2 years

2.) Principle = 2500

Time = 3 years

Total interest = Rs 810

simple interest 1 = 3000 x 2 x R / 100 = 60 R

simple interest 2 = 2500 x 3 x R / 100 = 75 R

Rs 810=60 R +75 R

810 = 135 R

R = 810 / 135

R = 6 % per annum

Rate is 6 %

• it was written n the question the rates are same so both rate is 6 %