In this chapter, we provide RS Aggarwal Solutions for Class 7 Chapter 9 Unitary Method Ex 9C for English medium students, Which will very helpful for every student in their exams. Students can download the latest RS Aggarwal Solutions for Class 7 Chapter 9 Unitary Method Ex 9C Maths pdf, free RS Aggarwal Solutions Class 7 Chapter 9 Unitary Method Ex 9C Maths book pdf download. Now you will get step by step solution to each question.

Textbook | NCER |

Class | Class 7 |

Subject | Maths |

Chapter | Chapter 9 |

Chapter Name | Unitary Method |

Exercise | 9C |

**RS Aggarwal Solutions for Class 7 Chapter 9 Unitary Method Ex 9C Download PDF**

**Question 1.****Solution:**

(c)

Weight of 4.5 m rod = 17.1 kg

**Question 2.****Solution:**

(d) None of these 0.8 cm represent the map = 8.8 km

**Question 3.****Solution:**

(c) In 20 minutes, Raghu covers = 5 km

in 1 minutes, he will cover = 520 km

and in 50 minutes, he will cover

**Question 4.****Solution:**

(d)

No. of men in the beginning = 500

More men arrived = 300

No. of total men = 500 + 300 = 800

For 500 men, provision are for = 24 days

For 1 man, provision will be = 24 x 500 days (less men, more days)

and for 800 men, provision will be = 24800 x 500 days

(more men less days)

= 15 days

**Question 5.****Solution:**

(b) Total cistern = 1

Filled in 1 minute = 45

Unfilled = 1 – 45 = 15

45 of cistern is filled in = 1 minutes = 60 seconds

1 full cistern can be filled in = 60×54 = 75 seconds

More time = 75 – 60 = 15 seconds

**Question 6.****Solution:**

(a)

15 buffaloes can eat as much as = 21 cows

1 buffalo will eat as much as = 2115 cows

35 buffaloes will eat as much as

= 21×3515 cm = 49 cows

**Question 7.****Solution:**

(b) 4 m long shadow is of a tree of height = 6 m

1 m long shadow of flagpole will of height = 64 m

50 m long shadow, the height of pole 6 will be = 64 x 50 = 75 m

**Question 8.****Solution:**

(b) 8 men can finish the work in = 40 days

1 man will finish it in=40 x 8 days (less men, more days)

8 + 2 = 10 men will finish it in = 40×810 days

(more men, less days)

= 32 days

**Question 9.****Solution:**

(b)

16 men can reap a field in = 30 days

1 man will reap the field in = 30 x 16 days

and 20 men will reap the field in = 30×1620 = 24 days

**Question 10.****Solution:**

(c) 10 pipe can fill tank in = 24 minutes

1 pipe will fill it in = 24 x 10 minutes (less pipe, more time)

and 10 – 2 = 8 pipes will fill the tank in

= 24×108 = 30 minutes

**Question 11.****Solution:**

(d) 6 dozen or 6 x 12 = 72 eggs

Cost of 72 eggs is = Rs. 108

Cost of 1 egg will be = Rs. 10872

and cost of 132 eggs will be 108

= Rs. 10872 x 132 = Rs. 198

**Question 12.****Solution:**

(b) 12 workers take to complete the work = 4 hrs.

1 worker will take = 4 x 12 hrs. (less worker, more time)

15 workers will take = 4×1215 hrs. (more workers, less time)

= 165 hr. = 3 hrs. 12 min

**Question 13.****Solution:**

(a) 27 days – 3 days = 24 days

Men = 500 + 300 = 800

For 500 men, provision is sufficient = 24 days

For 1 man, provision will be = 24 x 500 (less man, more days)

and for 500 + 300 = 800 men provision

will be sufficient = 24×500800 = 15 days

(more men, less days)

**Question 14.****Solution:**

(c) No. of rounds of rope = 140

Radius of base of cylinder = 14 cm

Radius of second cylinder of cylinder = 20 cm

If radius is 14 cm, then rounds of rope are = 140

If radius is 1 cm, then round = 140 x 14 (less radius more rounds)

and if radius is 20 cm, then rounds will

be = 140×1420 = 98 (more radius less rounds)

**Question 15.****Solution:**

(d) A worker makes toy in 23 hr= 1

He will make toys in 1 hr = 1 x 32

and will make toys in 223 hrs. = 1 x 32 x 223

= 11 (more time more toys)

**Question 16.****Solution:**

(d) A wall is constructed in 8 days by = 10 men

It will be constructed in 1 day by = 10 x 8 men (less time, more men)

10 x 8

More men required = 160 – 10 = 150

**All Chapter RS Aggarwal Solutions For Class 7 Maths**

—————————————————————————–**All Subject NCERT Exemplar Problems Solutions For Class** **7**

**All Subject NCERT Solutions For Class 7**

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