$500 at a 7% simple interest rate over 4years

So profit will be $140 and he will have a total of $640 after 4 years

Step-by-step explanation:

We know the formula for Interest rate i.e.

A = PRT             ............(i)

here in this equation is P is the money invested

R is the rate at which it is invested

T is the time for which money is invested

A is the amount we get after that period of time

Now in the question we are given

R= 7%

P=$500

T=4 years

Now Putting these values in equation (i)

A=PRT

Putting values gives

A = (500)*(7%)*(4)

A

A

A=35*4

A=$140

So he will gain a profit of $140

Total money he will have after 4 years = 500 + 140

                                                                 =$640

So profit will be $140 and he will have a total of $640 after 4 years

step-by-step explanation:

see if this :

step-by-step explanation:

the multiplicative inverse of a fraction a/b is b/a. for the multiplicative inverse of a real number, divide 1 by the number. for example, the reciprocal of 5 is one fifth 1/5 or 0.2, and the reciprocal of 0.25 is 1 divided by 0.25, or 4.