Ratio & Proportion 14 Practice Question Solve Now

Tick (√) the
correct answer:        

1. A ratio equivalent to 3 : 7 is:

               (i) 3 : 9; (ii) 6 : 10; (iii) 9 :
21; (iv) 18 : 49

2. The ratio 35 : 84 in simplest form
is:

               (i) 5 : 7; (ii) 7 : 12; (iii) 5 :
12; (iv) none of these

3. In a class there are 20 boys and 15
girls. The ratio of boys to girls is:

               (i) 4 : 3; (ii) 3 : 4; (iii) 4 :
5; (iv) none of these

4. Two numbers are in the ratio 7 : 9.
If the sum of the numbers is 112, then the larger number is:

               (i) 49; (ii) 72; (iii) 63; (iv)
42

5. The ratio of 1.5 m to 10 cm is:

               (i) 1 : 15; (ii) 15 : 10; (iii)
10 : 15; (iv)  15 : 1

6. The ratio of 1 hour to 300 seconds
is:

               (i) 1 : 12; (ii) 12 : 1; (iii) 1
: 5; (iv) 5 : 1

7. In 4 : 7 : : 16 : 28, 7 and 16 are
called

               (i) extreme terms; (ii) middle
terms; (iii) b middle and c extreme term; (iv) none of these

8. The first, second and fourth terms
of a proportion are 16, 24 and 54 respectively. Then the third term is:

               (i) 36; (ii) 28; (iii) 48; (iv)
32

9. If 12, 21, 72, 126 are in
proportion, then:

               (i) 12 × 21 = 72 × 126; (ii) 12 ×
72 = 21 × 126; (iii) 12 × 126 = 21 × 72; (iv) none of these

10. If x, y and z are in proportion,
then:

               (i) x : y : : z : x; (ii) x : y :
: y : z; (iii) x : y : : z : y; (iv) x : z : : y : z

11. 7 : 12 is equivalent to:

               (i) 28 : 40; (ii) 42 : 71; (iii)
72 : 42; (iv) 42 : 72

12. The length and breadth of a
rectangle are in the ratio 3 : 1. If the breadth is 7 cm, then the length of
the      rectangle is:

               (i) 14 cm; (ii) 16 cm; (iii) 18
cm; (iv) 21 cm

13. The value of m, if 3, 18, m, 42
are in proportion is:

               (i) 6; (ii) 54; (iii) 7; (iv)
none of these

14. Length and width of a field are in
the ratio 5 : 3. If the width of the field is 42 m then its length is:

               (i) 100 m; (ii) 80 m; (iii) 50 m;
(iv) 70 m

Answers for the multiple choice questions
on ratio and proportion are given below to check the exact option.

Answers: