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Arithmetic: Percentage Test 7
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Question 1 
Vipul decided to donate 5% of his salary. On the day of donation he changed his mind and donateRs. 1687.50 which was 75% of what he had decided earlier. How much is Vipulâ€™s salary?
Rs. 37,500  
Rs. 45,000  
Rs. 33750  
Cannot be determined 
Question 1 Explanation:
Let his salary be p
Initial decision to donate=5/100Ã—p=.05p
Final decision=.05pÃ—.75
Thus,.05p Ã—.75=1687.50
p=45,000
Initial decision to donate=5/100Ã—p=.05p
Final decision=.05pÃ—.75
Thus,.05p Ã—.75=1687.50
p=45,000
Question 2 
In an election between two candidates, one got 52% of total valid votes. 25% of the total votes were invalid. The total number of votes were 8400. How many valid votes did the other person get?
3276  
3196  
3024  
Cannot be determined 
Question 2 Explanation:
The other person got 48% of the valid votes
So she got (48/100) x (75/100) x 8400 = 3024
So she got (48/100) x (75/100) x 8400 = 3024
Question 3 
Vaishali spent Rs. 31.897 on the air conditioner for her home. Rs. 38.789 on buying plasma television and the remaining 23%of the total amount she had as cash with her. What was the total amount?
Rs. 74.625  
Rs. 86.750  
Rs. 91.800  
Cannot be determined 
Question 3 Explanation:
Percentage of total amount spent on air conditioner and television=77%
Total money spent on air conditioner and television=70.686 If the total amount is x
$ \begin{array}{l}\frac{77}{100}\times x=70.686\\X=91.800\end{array}$
Total money spent on air conditioner and television=70.686 If the total amount is x
$ \begin{array}{l}\frac{77}{100}\times x=70.686\\X=91.800\end{array}$
Question 4 
Prithvi spent Rs. 89.745 on his college fees. Rs.51.291 on Personality Development Classes and the remaining 27% of the total amount he had as cash with him. What was the total amount?
Rs.185.40  
Rs.189.60  
Rs.191.80  
Rs.193.20

Question 4 Explanation:
Percentage of total amount spent on college fees
and Personality development classes = 73%
Total money spent on college fees Personality development classes =141.036
If the total amount is a
Then (73/100) x a = 141,036
a=193.20
and Personality development classes = 73%
Total money spent on college fees Personality development classes =141.036
If the total amount is a
Then (73/100) x a = 141,036
a=193.20
Question 5 
Income of A is 150% of the income of B and income of C is120%of the income of A. If the total income of A, B and C together is Rs. 86,000, what is C's in come?
Rs. 30,000  
Rs. 32,000  
Rs. 20,000  
Rs. 36,000 
Question 5 Explanation:
Let B's income be p
Income of A=1.5p
Income of c=1.2Ã—1.5p=1.8p
So 4.3p=86000
p=20000
C's income=36,000
Income of A=1.5p
Income of c=1.2Ã—1.5p=1.8p
So 4.3p=86000
p=20000
C's income=36,000
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