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Q.

How many rupees do they make from 20 notes of 1000 rupees, 5 notes of 100 rupees and 14 notes of 10 rupees.


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a

20,640

b

20,540

c

20,600

d

None of these 

answer is A.

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Detailed Solution

Concep- To get the total amount they earned, multiply 20 notes by 1000, rupees 5 notes by 100 rupees, and rupees 14 notes by 10 rupees. Then, sum these three amounts.
There are 20 1000-rupee notes, 5 100-rupee notes, and 14 10-rupee notes, according to the information provided.
When we multiply 20 by 1000 to determine the rupees created by it since we have 20 rupees of 1000 rupees, we obtain
⇒20×1000  
⇒20000……(1)  
When we multiply 5 by 100 to get the amount of rupees generated by it, we obtain
⇒5×100  
⇒500……(2)  
To determine the total rupees they earned, we add equations (1), (2), and (3) to get
⇒20000+500+140  
⇒20640  
Hence, the correct answer is option 1.
 
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