1 ÷ 8/ 1=8

1 ÷ 6/ 1= 6

(8-6) ÷ 8

=2÷8

=4/ 1

Draw it yourself, followed by 144.

100/(10-1) × (55-1) = 600 meters.

Solution: Suppose X blocks are needed.

50X=60× 15

A: Yes 180 yuan.

Let a ring length x b ring length x+1150x = (x+11) 40 equation, and both sides are equal to the total length of the road. To solve x x=44, there is a one-step formula of 44x50=2200, and the total length of the road is 2200 ~