A cheetahs sprinting speed is 61 miles per hour less than three times a zebras running speed. A cheetah can sprint 68 miles per hour. Find the zebras running speed

Let Cheetah speed be c, let Zebra speed be z

Cheetah speed is (=) 61 miles per hour less than 3 * zebra running speed.

c = 3z - 61.

c = 68 miles/hour

c = 3z - 61

68 = 3z - 61

3z - 61 = 68

3z = 68 + 61

3z = 129

z = 129/3

z = 43

Zebra speed is 43 miles per hour