At what rate per annum will N250 amount to N330 in 4 years.

Step-by-step explanation:

Given,

Principal ( P ) = N 250

Time ( T ) = 4 years

Amount ( A ) =N 330

Rate ( R ) = ?

First, finding the Interest :

According to definition of Amount ,

Amount = Principal + Interest

plug the values

⇒

Move i to left hand side and change it's sign

⇒

Calculate

⇒

Change the signs of the both equation

⇒

Interest = 80

Finding the rate :

Simple Interest =

plug the values

⇒

Multiply the numbers

⇒

Apply cross product property

⇒

Multiply the numbers

⇒

Divide both sides of the equation by 1000

⇒

Calculate

⇒

Thus, Rate = 8 %

-------------------------------------------------------------------------

Let's learn about Principal , Interest , Time , Rate and Amount :

Hope I helped!

Best regards!!

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation: