Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The null hypothesis is 
The level of significance is 
From the z table the critical value of 
considering the two tails of the normal curve( This is because this a two tailed test ) is
Hence the critical value is
600(1+0.08/5)^5=649560.3
The valur of Rs 600will decline to 649560.3in 5 years interest is 8%
The cost of the blanket is $20
The cost of each letter is $1.50
Clue one tells you it ends in a 4 or 9.
Clue two tells you it has to be 9.
Clue three tells you x + 9 = 10
The number is 19
