00:01
Hi, from the question given that, suppose april wants to borrow dollar 400 from her father.
00:11
So, the principal amount that she borrow is $1 ,400 and is willing to pay $5 in interest.
00:20
So, simple interest will be $1 .5.
00:26
Her father wants to charge an interest rate of 3%, so rate is equal to 3%.
00:33
So here we need to find how long can april keep the money.
00:37
So here we need to find the value of t.
00:40
And in general, we know that the simple interest formula can be written as p, r, t divided by 100.
00:50
Now substitute the unknown values.
00:53
So here the simple interest is 5, which is equal to p is 400 and r is 3 and t is the unknown value divided by 100...