Ratio and Proportion MCQs Class- 7th RS Aggarwal Exe-7 C Goyal Brothers ICSE Maths Solution . We provide step by step Solutions of lesson-7 Ratio and Proportion for ICSE Class-7 Foundation RS Aggarwal Mathematics of Goyal Brothers Prakashan . Our Solutions contain all type Questions of Exe-7 C to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-7 Mathematics.
Ratio and Proportion MCQs Class- 7th RS Aggarwal Exe-7 C Goyal Brothers ICSE Maths Solution
| Board | ICSE |
| Publications | Goyal brothers Prakashan |
| Subject | Maths |
| Class | 7th |
| Chapter-7 | Ratio and Proportion |
| Writer | RS Aggrawal |
| Book Name | Foundation |
| Topics | Solution of Exe-7 C MCQs |
| Academic Session | 2023 – 2024 |
Exercise – 7 C MULTIPLE CHOICE QUESTIONS
Ratio and Proportion Class- 7th RS Aggarwal Goyal Brothers ICSE Maths Solution
Choose the correct option in each of the following :
1. The ratio between 6 cm and 20 mm is
(a) 3 : 1
(b) 3 : 10
(c) 6 : 10
(d) 3 : 2
Answer: option (a) 3 : 1 is correct.
2. The ratio (1/8) : (1/12) converted to the simplest form is
(a) 12 : 8
(b) 3 :2
(c) 2 : 5
(d) 8 : 20
Answer: option (b) 3 :2 is correct.
3. If A : B = 2 : 5 and B : C = 4 : 5, then C : A = ?
(a) 5 : 2
(b) 2 : 1
(c) 15 : 8
(d) 25 : 8
Answer: option (d) 25 : 8 is correct.
4. By increasing 91 in the ratio 7 : 13, we get :
(a) 182
(b) 169
(c) 121
(d) 116
Answer: option (b) 169 is correct.
5. If 12 : x : : 15 : 25, then the value of x is
(a) 10
(b) 15
(c) 18
(d) 20
Answer: option (d) 20 is correct.
6. The third proportional to 9 and 18 is
(a) 21
(b) 24
(c) 27
(d) 36
Answer: option (d) 36 is correct.
7. The mean proportional between 5 and 45 is
(a) 10
(b) 12
(c) 15
(d) 25
Answer: option (c) 15 is correct.
8. Which of the following are in continued proportion ?
(a) 4, 8, 12
(b) 5, 15, 25
(c) 6, 36, 216
(d) 9, 12, 18
Answer: option (c) 6, 36, 216 is correct.
MENTAL MATHS
Ratio and Proportion Class- 7th RS Aggarwal Goyal Brothers ICSE Maths Solution
1. Fill in the blanks :
(i) Ratio has no unit.
(ii) To convert a ratio a : b in its simplest form, we divide a and b by H.C.F. of a and b.
(iii) If a : b : : b : c, then a, b, c are said to be in continued proportion.
(iv) If a, b, c are in continued proportion, then c is called the third proportional to a and b.
(v) In a proportion, the first and fourth terms are called the extremes.
2. Write true (T) or false (F) :
| Statement | True/False |
| (i) If a, b, c, d are in proportion, then ac = bd. | F |
| (ii) If a : b : : c : d, then a, b, c, d are said to be in absolute proportion. | F |
| (iii) If a, b, c, are in continued proportion, then the mean proportion b = (a + c)/2. | F |
| (iv) If x is the third proportional to a, b, then a : b : : b : x. | T |
| (v) 1, 2, 3, 4, are in proportion. | F |
— : end of Ratio and Proportion Class- 7th RS Aggarwal Exe-7 C Goyal Brothers ICSE Maths Solution :–
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