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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