Question

1.A ratio equivalent to 3:7 is

3:9

9:21

6:10

2.The ratio of 35:84 in simplest form is

5:7

7:12

5:12

3.In a class there are 20 boys and 15 girls.the ratio of boys to girls is

4:3

3:4

4:5

4.The ratio of 1.5m to 10 cm is

1:15

15:10

15:1

5.The first, second and fourth terms of a proportion are 16,24 and 54 respectively then the third term is

36

28

48

6.If 12,21,72,126 are in proportion,then

12x21=72x126

12x126=21x72

12x72=21x126

7.The value of m,if 3,18,m,42 are in proportion is

6

7

54

8.7:12 is equivalent to

28:40

42:72

72:42

9.The ratio of 1hour to 300 seconds is

1:12

12:1

1:5


10.Two numbers are in the rato 7:9.If the sum of the numbers is 112, then the larger number is

49

72

63


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Answer 1

1.9:7

2.5:12

3.3:4

4.15;1

5.48