The ratio of 8 books to 20 books is
2 : 5
5 : 2
4 : 5
5 : 4
The ratio of the number of sides of a square to the number of edges of a cube is
1 : 2
3 : 2
4 : 1
1 : 3
A picture is 60 cm wide and 1.8 m long. The ratio of its width to its perimeter in lowest form is
1 : 2
1 : 3
1 : 4
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
1 : 8
1 : 7
1 : 6
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
11 : 320
3 : 40
3 : 80
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?
18
19
21
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
12
24
27
36
The greatest ratio among the ratios 2 : 3, 5 : 8, 75 : 121 and 40 : 25 is
2 : 3
5 : 8
75 : 121
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:
\(\dfrac{b}{b+g}\)
\(\dfrac{g}{b+g}\)
\(\dfrac{b}{g}\)
\(\dfrac{b+g}{b}\)
If a bus travels 160 km in 4 hours and a train travels 320 km in 5 hours at uniform speeds, then the ratio of the distances travelled by them in one hour is
1 : 2
4 : 5
5 : 8
8 : 5