Question

Helppp meee

Simple interest on RM3 600 for 4 years at
5% per annum is
A. RM720 C. RM900
B. RM860 D. RM1020
In what time will RM800 amount to
RM896 at 4 % per annum simple interest ?
A. 2 yr
C. 4 yr
B. 3 yr D. 6 yr​

Answer 1

1. A

2. B

Explanation:

I = Prt where I = interest, P = Principal amt, r = interest rate/100, T = time taken

I = Prt

I = 3600 × 5/100 × 4

I = 720

From I = Prt,

`t = (i)/(pr) \\ t = (96 * 100)/(800 * 4) \\ t = 3`