Solution: 8X=0.6× 12

x = 7.2 \8

X=0.9

(1) Solution: Set the wonderful idea to 1 minute and jump rope x times.

(2) Solution: Set the playground to be x meters long.

X:54=5:3

3X=54×5

x = 90°

(3) Solution: Let its actual length be x cm.

24.9:X= 1:24

X=24.9×24

X=597.6