John rose 3150 m at an average speed of 350 m/min, his many seconds fewer would the ride have taken him to complete

Some primitive triples are ...  (3, 4, 5)  (5, 12, 13)  (7, 24, 25)  (9, 40, 41)One interesting characteristic of these is that the sum of the last two numbers is the square of the first number.Any multiple of these will be a Pythagorean triple.Now consider your list.  a) (10, 24, 26) = 2×(5, 12, 13) . . . IS a Pythagorean Triple  b) 2×(7, 24, 25) = (14, 48, 50), so (14, 48, 49) is NOT a Pythagorean Triple  c) 3×(3, 4, 5) = (9, 12, 15), so (9, 12, 16) is NOT a Pythagorean Triple  d) (9, 40, 41) . . . IS a Pythagorean Triple  e) 5×(3, 4, 5) = (15, 20, 25) . . . IS a Pythagorean Triple The sets of side lengths that are Pythagorean Triples are ...  (10, 24, 26)  (9, 40, 41)  (15, 20, 25)