Question

5. Find the ratio of the following:
a. 3.5 m to 140 cm b. 2 km to 720 m
c. 25 paise to 3.25 d. 10 paise to 31
e. 320 mL to 1.2 L f. 2 L to 450 mL
g. 30 seconds to 2 minutes
h. 40 minutes to 3 hours​

Answer 1

30minutes to 1.5 hours, therefore we have to convert 1.5hours into minutes

required ratio =\frac{30}{90}=\frac{30\div30}{90\div30}=\frac{1}{3}=1:3=

90

30

=

90÷30

30÷30

=

3

1

=1:3

[HCF of 30 and 90 =30]

ii) 40cm to 1.5m, therefore we have to convert

1.5m to cm , m=100cm therefore, 1.5m=1.5X100cm = 150cm

therefore, required ratio =\frac{40}{150}=\frac{40\div10}{150\div10}=\frac{4}{15}=4:15

150

40

=

150÷10

40÷10

=

15

4

=4:15

[HCF of 40cm and 150cm is 10]

next from own