Maths
posted by Ranya .
Mrs jasmine Invested $4000 in a building society which paid simple interest at a rate of 7.25% per annum to its investors. After 2 years, the rate was increased to 7.6% per annum. Find the amount she had T the end of 7 years

Maths 
John
Do the first 2 years at the regular amount then ADD it to the final five years at the new amount. Both parts using the simple interest equation.

Maths 
Henry
P1 = Po + Po*r*t = 4000 + 4000*0.0725*2 = $4580 After 2 yrs.
P = Po + Po*r*t = 4580 + 4580*0.076*5 = Amt. after 7 yrs.
After 2 years, the account becomes a new account with an initial investment of $4580 for 5 years. 
Maths 
Anonymous
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