Ncert exemplar solutions mathematics class 6 Solutions for Chapter 8 ratio and proportion

Exercises in Chapter 8 ratio and proportion Grade 6

Exercise

Questions in Exercise

The ratio of 8 books to 20 books is

(A) 2 : 5 (B) 5 : 2 (C) 4 : 5 (D) 5 : 4

The ratio of the number of sides of a square to the number of edges of a cube is

(A) 1 : 2 (B) 3 : 2 (C) 4 : 1 (D) 1 : 3

A picture is 60cm wide and 1.8m long. The ratio of its width to its perimeter in

lowest form is

(A) 1 : 2 (B) 1 : 3 (C) 1 : 4 (D) 1 : 8

Neelam’s annual income is Rs. 288000. Her annual savings amount to Rs. 36000. The ratio of her savings to her expenditure is

(A) 1 : 8 (B) 1 : 7 (C) 1 : 6 (D) 1 : 5

Mathematics textbook for Class VI has 320 pages. The chapter ‘symmetry’ runs from page 261 to page 272. The ratio of the number of pages of this chapter to the total number of pages of the book is

(A) 11 : 320 (B) 3 : 40 (C) 3 : 80 (D) 272 : 320

In a box, the ratio of red marbles to blue marbles is 7:4. Which of the following could be the total number of marbles in the box?

(A) 18 (B) 19 (C) 21 (D) 22

On a shelf, books with green cover and that with brown cover are in the ratio 2:3. If there are 18 books with green cover, then the number of books with brown cover is

(A) 12 (B) 24 (C) 27 (D) 36

The greatest ratio among the ratios 2 : 3, 5 : 8, 75 : 121 and 40 : 25 is

(A) 2 : 3 (B) 5 : 8 (C) 75 : 121 (D) 40 : 25

There are ‘b’ boys and ‘g’ girls in a class. The ratio of the number of boys to the total number of students in the class is:

(A) b/(b + g)

(B) g/(b + g)

(D) (b + g)/b

If a bus travels 160 km in 4 hours and a train travels 320km in 5 hours at uniform speeds, then the ratio of the distances travelled by them in one hour is

(A) 1 : 2 (B) 4 : 5 (C) 5 : 8 (D) 8 : 5

3/5 = [ ]/20

(_)/18 = 2/9

8/(__) = 3.2/4

()/45 = 16/40 = 24/()

16/36 = ( )/63 = 36/( ) = ( )/117

3/8 = 15/40

4 : 7 = 20 : 35

0.2 : 5 = 2 : 0.5

3 : 33 = 33 : 333

15m : 40m = 35m : 65m

27cm2 : 57cm2 = 18cm : 38cm

5kg : 7.5kg = Rs 7.50 : Rs 5

20g : 100g = 1metre : 500cm

12 hours : 30 hours = 8km : 20km

The ratio of 10kg to 100kg is 1:10

The ratio of 150cm to 1metre is 1:1.5.

25kg : 20g = 50kg : 40g

The ratio of 1 hour to one day is 1:1.

The ratio 4 :16 is in its lowest form

The ratio 5 : 4 is different from the ratio 4 : 5.

A ratio will always be more than 1.

A ratio can be equal to 1.

If b : a = c : d, then a, b, c, d are in proportion.

The two terms of a ratio can be in two different units.

A ratio is a form of comparison by ______.

20m : 70m = Rs 8 : Rs ______.

There is a number in the box [ ] such that [ ], 24, 9, 12 are in proportion. The number in the box is _____.

If two ratios are equal, then they are in _____.

The ratio of the perimeter of the boundary of the shaded portion to the perimeter of the whole figure is _______.

The ratio of the area of the shaded portion to that of the whole figure is ______.

Sleeping time of a python in a 24 hour clock is represented by the shaded portion

in Fig. 8.3.

The ratio of sleeping time to awaking time is ______.

A ratio expressed in lowest form has no common factor other than ______ in its terms.

To find the ratio of two quantities, they must be expressed in _____units.

Ratio of 5 paise to 25 paise is the same as the ratio of 20 paise to _____

Saturn and Jupiter take 9 hours 56 minutes and 10 hours 40 minutes, respectively for one spin on their axes. The ratio of the time taken by Saturn and Jupiter in lowest form is ______.

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Chapters in this book

Number System

Geometry

Integers

Fractions and Decimals

Data Handling

Mensuration

Algebra

Ratio and Proportion

Symmetry and Practical Geometry