Question

24000 blood donors were registered with a charitable hospital.The number of donors increased at the rate of 5% every six months.Find the time period at the end of which the total number of blood donors becomes 27783.

Answer 1

Answer:

1 1/2 year

Step-by-step explanation:

Steps :

A = P ( 1 + R/100 ) ^ n .

Substituting values, we get,

27783 = 24000 ( 1 + 5 / 100 ) ^ n

27783 = 24000 ( 1 + 1 / 20 ) ^ n

Bringing 24000 to the denominator of LHS ,

27783/24000 = (21/20) ^ n

Dividing LHS Numerator and Denominator by common divisor 3, we get

 

9261/8000 = ( 21 / 20 ) ^ n

Finding the LHS square root, we get

(21/20) ^ 3 = ( 21/20 ) ^ n

Comparing LHS and RHS, we see n = 3

Therefore, Time period = 3 * 6 months = 18 months  

= 1 1/2 year.

Answer 2

Answer:

the blood donors are increased by. 6 month answer ,16704years