30. A salary of an officer being increased by 10% every year becomes RSS

being increased by 10% every year becomes Rs 48400 in the third year.

What was his original salary?

a) Rs 45000 b) Rs 44000 c) Rs 42000

Rs 40000

d)

31. When Usha was thrice as old as Nisha, her sister Asha was 25. When Nisha was halt

Asha, then sister Usha was 34. Their ages add to 100.100. How old is Usha?

a) 20

b) 30

c) 40

d) 50

32.

The average age of a family of five members is 24 years. If the present age of the youngest

member is 88 years, what was the average age of the family at the time of the birth of the

youngest member?

a) 50 b) 40 c) 30 . d) 20.

31

1201.

Let us imagine that the number of automobile accidents in a certain region are related to the regional number of registered automobiles in tens of thousands (b1), alcoholic beverage sales in $10,000 (b2), and decrease in the price of gasoline in cents (b3). furthermore, imagine that the regression formula has been calculated as: y = a + b1x1 + b2x2 + b3x3 where y = the number of automobile accidents, a = 7.5, b1 = 3.5, b2 = 4.5, and b3 = 2.5 calculate the expected number of automobile accidents for a football weekend if the region has 25,000 registered vehicles, $75,000 worth of beer is sold, and a gas war causes a 10 cent drop in a gallon of gas.