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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.

Find the ratio of:
(a) ₹ 5 to 50 paise
(b) 15 kg to 210 g
(c) 9 m to 27 cm
(d) 30 days to 36 hours

Solution:

To find the ratio it is very important for both numerator and denominator to have the same unit.

(a) ₹ 5 to 50 paise

Since, 1 rupee = 100 paise

So, 5 rupees = 100 × 5

= 500 paise

Therefore the ratio = 500 / 50

= 10/1 or 10:1

(b) 15 kg to 210 g

Since, 1 kg = 1000 grams

So, 15 kg = 1000 × 15

= 15000 grams

Therefore the ratio = 15000/210

= 500/7

= 500 : 7

(c) 9 m to 27 cm

1 m = 100 cm

So, 9 m = 100 × 9

= 900 cm

Thus, ratio = 900/27

= 100/3 or 100 : 3

(d) 30 days to 36 hours

Since, 1 day = 24 hours

So, 30days = 24 × 30

= 720 hours

So, ratio = 720/36

= 20/1 or 20 : 1

☛ Check: NCERT Solutions for Class 7 Maths Chapter 8

Video Solution:

Find the ratio of: (a) ₹ 5 to 50 paise (b) 15 kg to 210 g (c) 9 m to 27 cm (d) 30 days to 36 hours

Class 7 Maths NCERT Solutions Chapter 8 Exercise 8.1 Question 1

Summary:

The ratio of: (a) ₹ 5 to 50 paise (b) 15 kg to 210 g (c) 9 m to 27 cm (d) 30 days to 36 hours are i) 10:1, ii) 500:7, iii) 100:3, iv) 20:1

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