self Maths Puzzle

A,B and C were the three representatives for their school in a cross country race. A finished the race in middle position, B finished after A, in 19th position, and C finished 28th. How many school took part in the race?

Read Solution (Total 2)

33/3=11 b,cos A in middle position so odd no of people & so C is not the last.
odd multiple of 3 greater than 28 =33 .
11 years agoHelpfull: Yes(1) No(0)

3 as there are 3 representatives from different schools.
11 years agoHelpfull: Yes(0) No(1)

self Other Question

A group of children stand holding hands in a large circle and a teacher walks around a circle giving each child in order a number 1,2,3,4,5,6,7,8...... so on.. If number 12 standing opposite number 30. How many children are there in the circle. Two boats, one running upstream and the other downstream from points A to B meet after 10 seconds. It is known that one boat has moved 60 m more than the other. If the speed of the stream is 2 m/sec then what is the difference in the speeds of the two boats?