Question

4. Given the formula A = P(1 + rt), find the value
of r when A=27, P = 18 and t = 5.​

Answer 1

Answer:

R = 0.1

Step-by-step explanation:

A = p (1 + rt)

27 = 18 (1+ 5r)

27 - 18 = 90r

9 =90r

r =9/90

r = 1/10

r = 0.1

Answer 2

Given,

A = P(1 + rt)

A = 27

P = 18

t = 5

To find,

The value of r.

Solution,

We can easily solve this numerical problem by following the given steps.

Now,

We have

A = P(1 + rt)

Putting the values of A, P and t in this formula, we get

27 = 18(1 + 5r)

18(1 + 5r) = 27

1 + 5r = 27/18 ( 18 was in multiply on the left-hand side, so it will be in divide on the right-hand side.)

5r = 27/18 - 1

5r = 27 - 18/18

5r = 9/18

5r = 1/2 ( converting the fraction 9/18 into the simplest form)

r = 1/10

r = 0.1

Hence, the value of r will be 0.1.