Tom is chasing Jerry. In the same interval of time Tom jumps 8 times while Jerry jumps 6 times. But the distance covered by Tom in 7 Jumps is equal to the distance covered by Jerry in 5 Jumps. The ratio of speed of Tom and Jerry is:
Choose the correct choice.
A) 48 :35	B) 28 :15	C) 24 :20	D) 20 :21	E) None
Solution:   Given;   7 jumps of Tom = 5 jumps of Jerry.   Or, Tom / Jerry = 5/7;   Let Jerry's 1 leap = 7 meter and Tom's 1 leap = 5 meter.   Then, ratio of speed of Tom and Jerry = 8*5/6*7 = 40/42 = 20 :21.   Answer: Option 20 :21
<result>D</result>
Tom is chasing Jerry. In the same interval of time Tom jumps 8 times while Jerry jumps 6 times. But the distance covered by Tom in 7 Jumps is equal to the distance covered by Jerry in 5 Jumps. The ratio of speed of Tom and Jerry is: