RBSE Solutions for Class 7 Maths Chapter 15 Comparison of Quantities Ex 15.2

RBSE Solutions for Class 7 Maths Chapter 15 Comparison of Quantities Ex 15.2 is part of RBSE Solutions for Class 7 Maths. Here we have given Rajasthan Board RBSE Class 7 Maths Chapter 15 Comparison of Quantities Exercise 15.2.

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 7
Subject	Maths
Chapter	Chapter 15
Chapter Name	Comparison of Quantities
Exercise	Ex 15.2
Number of Questions	10
Category	RBSE Solutions

Rajasthan Board RBSE Class 7 Maths Chapter 15 Comparison of Quantities Ex 15.2

Question 1
Convert the given fraction (RBSESolutions.com) numbers into percentage.

Solution:

Question 2
Convert the given decimal (RBSESolutions.com) fractions in to percentage.
(i) 0.84
(ii) 1.25
(iii) 0.875
(iv) 0.001
Solution:
(i) 0.84 = 0.84 x 100% = 84 %
(ii) 1.25 = 1.25 x 100 % = 125%
(iii) 0.875 = 0.875 x 100% = 87.5%
(iv) 0.001 = 0.001 x 100% = 0.1 %

Question 3
Convert the given percentage (RBSESolutions.com) into simple fraction.
(i) 52%
(ii) 125%
(iii) 6\(\frac { 1 }{ 4 }\)%
(iv) 33 \(\frac { 1 }{ 3 }\)%
Solution:

Question 4
Find
(i) 15% of 320
(ii) 35% of 875
(iii) 20% of 1250gm
(iv) 16% of 32.5 m
Solution:

Question 5
Find
(i) 42% of what is 63.
(ii) 70% of what is 35
(iii) 13% of what is 1170
Solution:
Let 42% of x is 63

Question 6
Convert the given (RBSESolutions.com) percentage into decimals
(i) 7%
(i) 1 \(\frac { 2 }{ 5 }\) %
(i) 0.03%
(iv) 16.7%
Solution:

Question 7
Out of 500 students 85% are girls in a school. Find the (RBSESolutions.com) number of boys in the school.
Solution:
Total students = 500, girls = 85 %
Number of girls = 85 % of 500
= \(\frac { 500\times 85 }{ 100 }\)
= 5 x 85 = 425
So, number of boys = 500 – 425 = 75 boys

Question 8
During Green Rajastan Campaign trees were (RBSESolutions.com) planted in Akola village of Rajasthan out of which 10% of the trees dried If 1800 trees are left here then how many trees were planted in the beginning?
Solution:
If planted tree are x
Number of dried trees = 10% of x


So, 2000 trees are planted.

Question 9
950 votes were casted at an election booth. Out of which 57 votes (RBSESolutions.com) were rejected. If 1045 names of voter were registered in the voter list then what percentage of polling was done?
Solution:
Total number of votes casted = 950
cancelled votes = 57
Successful votes casted = 950 – 57 = 893
Votting % = \(\frac { 893\times 100 }{ 1045 }\)
= 85.45%

Question 10
On the occasion of Shaheed Diwas 28 members out of 35 members (RBSESolutions.com) of Subhash Club donated blood. Similarly 38 out of 40 members of TilakClub donated blood. Which club mem-bers donated more percentage of blood?
Solution:
Percentage of blood donation by Subhas club
= \(\frac { 28\times 100 }{ 35 }\) = \(\frac { 4\times 100 }{ 5 }\) = 4 x 20 = 80%
Percentage of blood donation by Tilak club
= \(\frac { 38\times 100 }{ 40 }\)% = \(\frac { 38\times 10 }{ 4 }\) = 19 x 5 = 95%
So, Tilak club donate more percentage.

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