Find the ratio of :-
a) 30 minutes to 3.5 hours
Answers
Answer:
5.20
Ncert solutions
Grade 6
Mathematics
Chapters in NCERT Solutions - Mathematics, Class 6
Exercises in Ratio and Proportion
Question 7
Q7) Find the ratio of the following:
(a) 30 minutes to 1.5 hours (b) 40 cm to 1.5 m
(c) 55 paise to ` 1 (d) 500 mL to 2 litres
Solution
Transcript
SOLUTION:
i) 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]
iii) 55paise to1rupee
therefore, we need to convert 1rupee into paise
1rs=100paise
require ratio=\frac{55}{100}=\frac{55\div5}{100\div5}=\frac{11}{20}=11:20
100
55
=
100÷5
55÷5
=
20
11
=11:20
[HCF of 55 and 100 =5]
iv) 500ml to 2litres
therefore, we need to convert litres to ml
1l=1000ml = 2X1000ml
required ratio= \frac{500\div100}{2000\div100}=\frac{5}{20}=5:20
2000÷100
500÷100
=
20
5
=5:20
[HCF of 500, 2000 is 100]
Answer:
refer to the attachment
