1bx3/4=a

a/3/4=b

A: B =3/4

2.(3/5)/2=3/ 10 2/(3/5)= 10/3

(3/5)/(2/3)=3/5

3.24:36=2:3 0.75: 1=3:4

(3/4):(9/ 10)=5:6

4.( 1)200/(2/5)=500 (only)

(2)200/( 1-3/5)=500 (only)

(3)700x(2/7)=200 (only)

p53

1(1) X. (2) V. (3) X. (4) X.

2. Omit.

3. Omit.

4.30/(10/11) = 33 (cubic decimeter)

5.60/(6/11) =110 (km/h)

6.500x(2/25)/( 1/6)=240 (times)

7.( 1)8: 10=4/5=40/50=0.8

(2) 1.25 4:5 4/9

(3) 1/ 10

8. Daylight: 24x(5/8)= 15 (hour)

Night: 24x(3/8)=9 (hours)

9. 150:60: 15= 10:4: 1

10. 12:38=6: 19

15000:38

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