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:

27 = 18(1+5r)

27 = 18+90r

27-18 = 90r

9 = 90r

9/90 = r

1/10 = r

0.1 = r ANS

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Answer 2

Answer:

A = P(1+rt)

27=18(1+r[5])

27=18(1+5r)

1+5r=27/18

1+5r=3/2

5r=3/2-1

5r=3-2/2. [lcm=2]

5r=1/2

5r=0.5

r=0.5/5

r=1/10

r=0.1