A model of a car is 24 in. long. The actual car is 16 ft long. What is the ratio of the length of the model to the length of the car?

1 foot = 12 inches.

The model of the car is 24/12 = 2 feet long.

The ratio would be 2 ft/ 16 ft which can be reduced to 1/8

Answer 1/8

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.