59) A turtle is crossing a field. What is the total difference passed by the turtle? Consider the following 2 statements:
(X) The average speed of turtle is 2 meters per minute.
(Y) Had the turtle walked 1 meter per minute faster than his average speed, it would have finished 40 minutes earlier.

a) Statement X alone is sufficient to answer the question
b) Both X and Y are needed
c) Y alone is needed
d) X and Y both are not sufficient to answer.

• taking statement y d=sxt-(1) distance remains constant, so d=(s+1)x(t-40). d=st-40s+t-40
  It can be written as d=d-40s+t-40. 40s=t-40.atleast one parameter s or t should be known for determining the other.so,from statement x, s=2. therefore t=120 and d=2x120=240m. thus both the statements are needed. b)
• 9 years agoHelpfull: Yes(1) No(0)